7943157792 has 72 divisors (see below), whose sum is σ = 23917096476. Its totient is φ = 2491969536.

The previous prime is 7943157749. The next prime is 7943157821. The reversal of 7943157792 is 2977513497.

7943157792 is a `hidden beast` number, since 79 + 431 + 57 + 7 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7891834896 + 51322896 = 88836^2 + 7164^2 .

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

It is a super-2 number, since 2×7943157792² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806293 + ... + 816084.

Almost surely, 2^7943157792 is an apocalyptic number.

7943157792 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7943157792 is an abundant number, since it is smaller than the sum of its proper divisors (15973938684).

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

7943157792 is a wasteful number, since it uses less digits than its factorization.

7943157792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622410 (or 1622399 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 7943157792 is about 89124.3950442302. The cubic root of 7943157792 is about 1995.2518859602.

The spelling of 7943157792 in words is "seven billion, nine hundred forty-three million, one hundred fifty-seven thousand, seven hundred ninety-two".