79690295780 has 12 divisors (see below), whose sum is σ = 167349621180. Its totient is φ = 31876118304.

The previous prime is 79690295719. The next prime is 79690295807. The reversal of 79690295780 is 8759209697.

It can be written as a sum of positive squares in 2 ways, for example, as 16262880676 + 63427415104 = 127526^2 + 251848^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1992257375 + ... + 1992257414.

It is an arithmetic number, because the mean of its divisors is an integer number (13945801765).

Almost surely, 2^79690295780 is an apocalyptic number.

It is an amenable number.

79690295780 is an abundant number, since it is smaller than the sum of its proper divisors (87659325400).

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

79690295780 is a wasteful number, since it uses less digits than its factorization.

79690295780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984514798 (or 3984514796 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 62.

The spelling of 79690295780 in words is "seventy-nine billion, six hundred ninety million, two hundred ninety-five thousand, seven hundred eighty".