79434420646788 has 72 divisors (see below), whose sum is σ = 201439530198816. Its totient is φ = 26392857955200.

The previous prime is 79434420646783. The next prime is 79434420646811. The reversal of 79434420646788 is 88764602443497.

79434420646788 is a `hidden beast` number, since 7 + 9 + 4 + 3 + 4 + 420 + 64 + 67 + 88 = 666.

79434420646788 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (79434420646783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59045920 + ... + 60376232.

Almost surely, 2^{79434420646788} is an apocalyptic number.

It is an amenable number.

79434420646788 is an abundant number, since it is smaller than the sum of its proper divisors (122005109552028).

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

79434420646788 is a wasteful number, since it uses less digits than its factorization.

79434420646788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335665 (or 1335660 counting only the distinct ones).

The product of its (nonzero) digits is 1560674304, while the sum is 72.

The spelling of 79434420646788 in words is "seventy-nine trillion, four hundred thirty-four billion, four hundred twenty million, six hundred forty-six thousand, seven hundred eighty-eight".