16525645980 has 48 divisors (see below), whose sum is σ = 46405215360. Its totient is φ = 4394133568.

The previous prime is 16525645951. The next prime is 16525645987. The reversal of 16525645980 is 8954652561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16525645987) 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, 376050 + ... + 417689.

It is an arithmetic number, because the mean of its divisors is an integer number (966775320).

Almost surely, 2^16525645980 is an apocalyptic number.

16525645980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16525645980 is an abundant number, since it is smaller than the sum of its proper divisors (29879569380).

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

16525645980 is a wasteful number, since it uses less digits than its factorization.

16525645980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794098 (or 794096 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 16525645980 in words is "sixteen billion, five hundred twenty-five million, six hundred forty-five thousand, nine hundred eighty".