16320573504 has 63 divisors (see below), whose sum is σ = 46788767103. Its totient is φ = 5439169152.

The previous prime is 16320573499. The next prime is 16320573523. The reversal of 16320573504 is 40537502361.

The square root of 16320573504 is 127752.

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

16320573504 is a `hidden beast` number, since 1 + 6 + 32 + 0 + 573 + 50 + 4 = 666.

It is a super-2 number, since 2×16320573504² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3063387 + ... + 3068709.

Almost surely, 2^16320573504 is an apocalyptic number.

16320573504 is the 127752-nd square number.

It is an amenable number.

16320573504 is an abundant number, since it is smaller than the sum of its proper divisors (30468193599).

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

16320573504 is an frugal number, since it uses more digits than its factorization.

16320573504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10664 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

Multiplying 16320573504 by its sum of digits (36), we get a square (587540646144 = 766512²).

16320573504 divided by its sum of digits (36) gives a square (453349264 = 21292²).

It can be divided in two parts, 16320 and 573504, that added together give a square (589824 = 768²).

The spelling of 16320573504 in words is "sixteen billion, three hundred twenty million, five hundred seventy-three thousand, five hundred four".