79660231805 has 32 divisors (see below), whose sum is σ = 123289655040. Its totient is φ = 47945963520.

The previous prime is 79660231793. The next prime is 79660231841. The reversal of 79660231805 is 50813206697.

It is not a de Polignac number, because 79660231805 - 2⁶ = 79660231741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79660231805.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3556244 + ... + 3578573.

It is an arithmetic number, because the mean of its divisors is an integer number (3852801720).

Almost surely, 2^79660231805 is an apocalyptic number.

It is an amenable number.

79660231805 is a deficient number, since it is larger than the sum of its proper divisors (43629423235).

79660231805 is a wasteful number, since it uses less digits than its factorization.

79660231805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134869.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 79660231805 in words is "seventy-nine billion, six hundred sixty million, two hundred thirty-one thousand, eight hundred five".