160999957504 has 33 divisors (see below), whose sum is σ = 321868357867. Its totient is φ = 80493558784.

The previous prime is 160999957499. The next prime is 160999957513. The reversal of 160999957504 is 405759999061.

The square root of 160999957504 is 401248.

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

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12833667 + ... + 12846205.

Almost surely, 2^160999957504 is an apocalyptic number.

160999957504 is the 401248-th square number.

It is an amenable number.

160999957504 is a deficient number, since it is larger than the sum of its proper divisors (160868400363).

160999957504 is an frugal number, since it uses more digits than its factorization.

160999957504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25098 (or 12541 counting only the distinct ones).

The product of its (nonzero) digits is 27556200, while the sum is 64.

Multiplying 160999957504 by its sum of digits (64), we get a square (10303997280256 = 3209984²).

160999957504 divided by its sum of digits (64) gives a square (2515624336 = 50156²).

The spelling of 160999957504 in words is "one hundred sixty billion, nine hundred ninety-nine million, nine hundred fifty-seven thousand, five hundred four".