16351979252 has 48 divisors (see below), whose sum is σ = 33167328768. Its totient is φ = 6909325920.

The previous prime is 16351979249. The next prime is 16351979309. The reversal of 16351979252 is 25297915361.

It is a self number, because there is not a number n which added to its sum of digits gives 16351979252.

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, 619223 + ... + 645089.

It is an arithmetic number, because the mean of its divisors is an integer number (690986016).

Almost surely, 2^16351979252 is an apocalyptic number.

It is an amenable number.

16351979252 is an abundant number, since it is smaller than the sum of its proper divisors (16815349516).

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

16351979252 is a wasteful number, since it uses less digits than its factorization.

16351979252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26196 (or 26194 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 50.

The spelling of 16351979252 in words is "sixteen billion, three hundred fifty-one million, nine hundred seventy-nine thousand, two hundred fifty-two".