16555156500 has 48 divisors (see below), whose sum is σ = 48208620096. Its totient is φ = 4414708000.

The previous prime is 16555156489. The next prime is 16555156547. The reversal of 16555156500 is 565155561.

It is a congruent number.

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, 5516886 + ... + 5519885.

It is an arithmetic number, because the mean of its divisors is an integer number (1004346252).

Almost surely, 2^16555156500 is an apocalyptic number.

16555156500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16555156500 is an abundant number, since it is smaller than the sum of its proper divisors (31653463596).

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

16555156500 is a wasteful number, since it uses less digits than its factorization.

16555156500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036793 (or 11036781 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 16555156500 in words is "sixteen billion, five hundred fifty-five million, one hundred fifty-six thousand, five hundred".