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55080000000 = 29345717
BaseRepresentation
bin110011010011000001…
…100001101000000000
312021011121201220120000
4303103001201220000
51400300440000000
641145311320000
73656635163244
oct632301415000
9167147656500
1055080000000
11213a5251263
12a812220000
13526a35b99c
142947298424
151675850000
hexcd3061a00

55080000000 has 800 divisors, whose sum is σ = 217586747664. Its totient is φ = 13824000000.

The previous prime is 55079999977. The next prime is 55080000043. The reversal of 55080000000 is 8055.

It can be written as a sum of positive squares in 8 ways, for example, as 45236185344 + 9843814656 = 212688^2 + 99216^2 .

It is a tau number, because it is divible by the number of its divisors (800).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 5100 × 4500 × 2400.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3239999992 + ... + 3240000008.

Almost surely, 255080000000 is an apocalyptic number.

55080000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55080000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108793373832).

55080000000 is an abundant number, since it is smaller than the sum of its proper divisors (162506747664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55080000000 is an frugal number, since it uses more digits than its factorization.

55080000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 55080000000 its reverse (8055), we get a palindrome (55080008055).

The spelling of 55080000000 in words is "fifty-five billion, eighty million", and thus it is an aban number and an uban number.