79758220478 has 32 divisors (see below), whose sum is σ = 121939473600. Its totient is φ = 39117899520.

The previous prime is 79758220469. The next prime is 79758220481. The reversal of 79758220478 is 87402285797.

It is a super-2 number, since 2×79758220478² (a number of 23 digits) 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 15 ways as a sum of consecutive naturals, for example, 41260400 + ... + 41262332.

It is an arithmetic number, because the mean of its divisors is an integer number (3810608550).

Almost surely, 2^79758220478 is an apocalyptic number.

79758220478 is a deficient number, since it is larger than the sum of its proper divisors (42181253122).

79758220478 is a wasteful number, since it uses less digits than its factorization.

79758220478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332.

The product of its (nonzero) digits is 15805440, while the sum is 59.

The spelling of 79758220478 in words is "seventy-nine billion, seven hundred fifty-eight million, two hundred twenty thousand, four hundred seventy-eight".