15550623608 has 16 divisors (see below), whose sum is σ = 31400297880. Its totient is φ = 7177210848.

The previous prime is 15550623581. The next prime is 15550623619. The reversal of 15550623608 is 80632605551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74762510 + ... + 74762717.

Almost surely, 2^15550623608 is an apocalyptic number.

It is an amenable number.

15550623608 is an abundant number, since it is smaller than the sum of its proper divisors (15849674272).

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

15550623608 is a wasteful number, since it uses less digits than its factorization.

15550623608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149525246 (or 149525242 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 15550623608 in words is "fifteen billion, five hundred fifty million, six hundred twenty-three thousand, six hundred eight".