79820467965 has 96 divisors (see below), whose sum is σ = 171947093760. Its totient is φ = 33414653952.

The previous prime is 79820467943. The next prime is 79820467981. The reversal of 79820467965 is 56976402897.

79820467965 is a `hidden beast` number, since 7 + 9 + 82 + 0 + 467 + 96 + 5 = 666.

It is not a de Polignac number, because 79820467965 - 2¹⁰ = 79820466941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3295 + ... + 399564.

It is an arithmetic number, because the mean of its divisors is an integer number (1791115560).

Almost surely, 2^79820467965 is an apocalyptic number.

It is an amenable number.

79820467965 is an abundant number, since it is smaller than the sum of its proper divisors (92126625795).

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

79820467965 is a wasteful number, since it uses less digits than its factorization.

79820467965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402931 (or 402928 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 79820467965 in words is "seventy-nine billion, eight hundred twenty million, four hundred sixty-seven thousand, nine hundred sixty-five".