79747943670 has 48 divisors (see below), whose sum is σ = 219541402080. Its totient is φ = 20015169792.

The previous prime is 79747943669. The next prime is 79747943713. The reversal of 79747943670 is 7634974797.

79747943670 is a `hidden beast` number, since 7 + 97 + 47 + 9 + 436 + 70 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 79747943598 and 79747943607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26059890 + ... + 26062949.

It is an arithmetic number, because the mean of its divisors is an integer number (4573779210).

Almost surely, 2^79747943670 is an apocalyptic number.

79747943670 is an abundant number, since it is smaller than the sum of its proper divisors (139793458410).

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

79747943670 is a wasteful number, since it uses less digits than its factorization.

79747943670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52122869 (or 52122866 counting only the distinct ones).

The product of its (nonzero) digits is 56010528, while the sum is 63.

The spelling of 79747943670 in words is "seventy-nine billion, seven hundred forty-seven million, nine hundred forty-three thousand, six hundred seventy".