5179872321 has 128 divisors (see below), whose sum is σ = 9051750400. Its totient is φ = 2936388672.

The previous prime is 5179872277. The next prime is 5179872331. The reversal of 5179872321 is 1232789715.

5179872321 is a `hidden beast` number, since 517 + 98 + 7 + 23 + 21 = 666.

It is not a de Polignac number, because 5179872321 - 2⁷ = 5179872193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5179872331) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23228016 + ... + 23228238.

It is an arithmetic number, because the mean of its divisors is an integer number (70716800).

Almost surely, 2^5179872321 is an apocalyptic number.

5179872321 is the 41553-rd octagonal number.

It is an amenable number.

5179872321 is a deficient number, since it is larger than the sum of its proper divisors (3871878079).

5179872321 is a wasteful number, since it uses less digits than its factorization.

5179872321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 301 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 5179872321 is about 71971.3298543246. The cubic root of 5179872321 is about 1730.2400149248.

The spelling of 5179872321 in words is "five billion, one hundred seventy-nine million, eight hundred seventy-two thousand, three hundred twenty-one".