79158947904 has 189 divisors, whose sum is σ = 239853923517. Its totient is φ = 24957047808.

The previous prime is 79158947899. The next prime is 79158947963. The reversal of 79158947904 is 40974985197.

The square root of 79158947904 is 281352.

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

79158947904 is a `hidden beast` number, since 7 + 9 + 1 + 589 + 47 + 9 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2292494400 + 76866453504 = 47880^2 + 277248^2 .

It is a super-2 number, since 2×79158947904² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 128296204 + ... + 128296820.

Almost surely, 2^79158947904 is an apocalyptic number.

79158947904 is the 281352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79158947904

79158947904 is an abundant number, since it is smaller than the sum of its proper divisors (160694975613).

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

79158947904 is an equidigital number, since it uses as much as digits as its factorization.

79158947904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 63.

The spelling of 79158947904 in words is "seventy-nine billion, one hundred fifty-eight million, nine hundred forty-seven thousand, nine hundred four".