5981664672 has 72 divisors (see below), whose sum is σ = 17640395136. Its totient is φ = 1993885632.

The previous prime is 5981664649. The next prime is 5981664677. The reversal of 5981664672 is 2764661895.

5981664672 is a `hidden beast` number, since 598 + 1 + 6 + 6 + 46 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (5981664677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376848 + ... + 392399.

It is an arithmetic number, because the mean of its divisors is an integer number (245005488).

Almost surely, 2^5981664672 is an apocalyptic number.

It is an amenable number.

5981664672 is an abundant number, since it is smaller than the sum of its proper divisors (11658730464).

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

5981664672 is an equidigital number, since it uses as much as digits as its factorization.

5981664672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769272 (or 769252 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 5981664672 is about 77341.2223332422. Note that the first 3 decimals coincide. The cubic root of 5981664672 is about 1815.2677318319.

The spelling of 5981664672 in words is "five billion, nine hundred eighty-one million, six hundred sixty-four thousand, six hundred seventy-two".