55111606616 has 32 divisors (see below), whose sum is σ = 113224927680. Its totient is φ = 24940365600.

The previous prime is 55111606603. The next prime is 55111606633. The reversal of 55111606616 is 61660611155.

It is a self number, because there is not a number n which added to its sum of digits gives 55111606616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359470 + ... + 1399421.

It is an arithmetic number, because the mean of its divisors is an integer number (3538278990).

Almost surely, 2^55111606616 is an apocalyptic number.

It is an amenable number.

55111606616 is an abundant number, since it is smaller than the sum of its proper divisors (58113321064).

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

55111606616 is a wasteful number, since it uses less digits than its factorization.

55111606616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759135 (or 2759131 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 55111606616 in words is "fifty-five billion, one hundred eleven million, six hundred six thousand, six hundred sixteen".