55511500000 has 168 divisors, whose sum is σ = 149042310984. Its totient is φ = 20184000000.

The previous prime is 55511499977. The next prime is 55511500003. The reversal of 55511500000 is 511555.

55511500000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (22) 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 (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511500003) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5494954 + ... + 5505046.

It is an arithmetic number, because the mean of its divisors is an integer number (887156613).

Almost surely, 2^55511500000 is an apocalyptic number.

55511500000 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 55511500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74521155492).

55511500000 is an abundant number, since it is smaller than the sum of its proper divisors (93530810984).

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

55511500000 is an equidigital number, since it uses as much as digits as its factorization.

55511500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144 (or 10111 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 22.

The spelling of 55511500000 in words is "fifty-five billion, five hundred eleven million, five hundred thousand".