55178786544522 has 32 divisors (see below), whose sum is σ = 116166825614400. Its totient is φ = 17424736080768.

The previous prime is 55178786544493. The next prime is 55178786544533. The reversal of 55178786544522 is 22544568787155.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12316104 + ... + 16187772.

It is an arithmetic number, because the mean of its divisors is an integer number (3630213300450).

Almost surely, 2^{55178786544522} is an apocalyptic number.

55178786544522 is an abundant number, since it is smaller than the sum of its proper divisors (60988039069878).

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

55178786544522 is a wasteful number, since it uses less digits than its factorization.

55178786544522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996710.

The product of its digits is 752640000, while the sum is 69.

The spelling of 55178786544522 in words is "fifty-five trillion, one hundred seventy-eight billion, seven hundred eighty-six million, five hundred forty-four thousand, five hundred twenty-two".