16971252465924 has 81 divisors (see below), whose sum is σ = 45277514424597. Its totient is φ = 5359194577728.

The previous prime is 16971252465901. The next prime is 16971252465949. The reversal of 16971252465924 is 42956425217961.

It is a happy number.

The square root of 16971252465924 is 4119618.

It is a perfect power (a square), and thus also a powerful number.

16971252465924 is a `hidden beast` number, since 1 + 6 + 9 + 7 + 12 + 5 + 24 + 6 + 592 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10148875632900 + 6822376833024 = 3185730^2 + 2611968^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 469618384 + ... + 469654520.

Almost surely, 2^{16971252465924} is an apocalyptic number.

16971252465924 is the 4119618-th square number.

It is an amenable number.

16971252465924 is an abundant number, since it is smaller than the sum of its proper divisors (28306261958673).

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

16971252465924 is an frugal number, since it uses more digits than its factorization.

16971252465924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72322 (or 36161 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 16971252465924 in words is "sixteen trillion, nine hundred seventy-one billion, two hundred fifty-two million, four hundred sixty-five thousand, nine hundred twenty-four".