5178912372 has 18 divisors (see below), whose sum is σ = 13091139698. Its totient is φ = 1726304112.

The previous prime is 5178912337. The next prime is 5178912407. The reversal of 5178912372 is 2732198715.

5178912372 is a `hidden beast` number, since 517 + 8 + 9 + 123 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (5178912337) and next prime (5178912407).

It can be written as a sum of positive squares in only one way, i.e., 5171911056 + 7001316 = 71916^2 + 2646^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×5178912372² = 53642266713709332768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71929303 + ... + 71929374.

Almost surely, 2^5178912372 is an apocalyptic number.

It is an amenable number.

5178912372 is an abundant number, since it is smaller than the sum of its proper divisors (7912227326).

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

5178912372 is a wasteful number, since it uses less digits than its factorization.

5178912372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143858687 (or 143858682 counting only the distinct ones).

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

The square root of 5178912372 is about 71964.6605772583. The cubic root of 5178912372 is about 1730.1331239512.

The spelling of 5178912372 in words is "five billion, one hundred seventy-eight million, nine hundred twelve thousand, three hundred seventy-two".