55156551102 has 256 divisors, whose sum is σ = 138008448000. Its totient is φ = 16304150016.

The previous prime is 55156551101. The next prime is 55156551157. The reversal of 55156551102 is 20115565155.

55156551102 is a `hidden beast` number, since 5 + 51 + 56 + 551 + 1 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55156551101) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 515481733 + ... + 515481839.

It is an arithmetic number, because the mean of its divisors is an integer number (539095500).

Almost surely, 2^55156551102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55156551102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69004224000).

55156551102 is an abundant number, since it is smaller than the sum of its proper divisors (82851896898).

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

55156551102 is a wasteful number, since it uses less digits than its factorization.

55156551102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 55156551102 in words is "fifty-five billion, one hundred fifty-six million, five hundred fifty-one thousand, one hundred two".