55291600000 has 768 divisors, whose sum is σ = 178488576000. Its totient is φ = 16934400000.

The previous prime is 55291599997. The next prime is 55291600019. The reversal of 55291600000 is 619255.

55291600000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55291600000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1783599985 + ... + 1783600015.

It is an arithmetic number, because the mean of its divisors is an integer number (232407000).

Almost surely, 2^55291600000 is an apocalyptic number.

55291600000 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 55291600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89244288000).

55291600000 is an abundant number, since it is smaller than the sum of its proper divisors (123196976000).

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

55291600000 is an frugal number, since it uses more digits than its factorization.

55291600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 55291600000 in words is "fifty-five billion, two hundred ninety-one million, six hundred thousand".