16522523920 has 40 divisors (see below), whose sum is σ = 43902707904. Its totient is φ = 5664865152.

The previous prime is 16522523909. The next prime is 16522523929. The reversal of 16522523920 is 2932522561.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 16522523920.

It is not an unprimeable number, because it can be changed into a prime (16522523929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14751694 + ... + 14752813.

Almost surely, 2^16522523920 is an apocalyptic number.

16522523920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16522523920 is an abundant number, since it is smaller than the sum of its proper divisors (27380183984).

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

16522523920 is a wasteful number, since it uses less digits than its factorization.

16522523920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29504527 (or 29504521 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 16522523920 in words is "sixteen billion, five hundred twenty-two million, five hundred twenty-three thousand, nine hundred twenty".