16251909892 has 12 divisors (see below), whose sum is σ = 28517093836. Its totient is φ = 8104168800.

The previous prime is 16251909857. The next prime is 16251909913. The reversal of 16251909892 is 29890915261.

It can be written as a sum of positive squares in 2 ways, for example, as 4567597056 + 11684312836 = 67584^2 + 108094^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5444859 + ... + 5447842.

Almost surely, 2^16251909892 is an apocalyptic number.

It is an amenable number.

16251909892 is a deficient number, since it is larger than the sum of its proper divisors (12265183944).

16251909892 is a wasteful number, since it uses less digits than its factorization.

16251909892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10893078 (or 10893076 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 16251909892 in words is "sixteen billion, two hundred fifty-one million, nine hundred nine thousand, eight hundred ninety-two".