55615470621564 has 96 divisors (see below), whose sum is σ = 155541657148416. Its totient is φ = 15122105349120.

The previous prime is 55615470621523. The next prime is 55615470621619. The reversal of 55615470621564 is 46512607451655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72681517 + ... + 73442724.

It is an arithmetic number, because the mean of its divisors is an integer number (1620225595296).

Almost surely, 2^{55615470621564} is an apocalyptic number.

It is an amenable number.

55615470621564 is an abundant number, since it is smaller than the sum of its proper divisors (99926186526852).

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

55615470621564 is a wasteful number, since it uses less digits than its factorization.

55615470621564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146124475 (or 146124473 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 57.

The spelling of 55615470621564 in words is "fifty-five trillion, six hundred fifteen billion, four hundred seventy million, six hundred twenty-one thousand, five hundred sixty-four".