16297508920 has 64 divisors (see below), whose sum is σ = 45717696000. Its totient is φ = 5079742080.

The previous prime is 16297508911. The next prime is 16297508921. The reversal of 16297508920 is 2980579261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16297508921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2642620 + ... + 2648779.

It is an arithmetic number, because the mean of its divisors is an integer number (714339000).

Almost surely, 2^16297508920 is an apocalyptic number.

16297508920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16297508920 is an abundant number, since it is smaller than the sum of its proper divisors (29420187080).

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

16297508920 is a wasteful number, since it uses less digits than its factorization.

16297508920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291428 (or 5291424 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 16297508920 in words is "sixteen billion, two hundred ninety-seven million, five hundred eight thousand, nine hundred twenty".