79445746277 has 4 divisors (see below), whose sum is σ = 79598233836. Its totient is φ = 79293258720.

The previous prime is 79445746231. The next prime is 79445746313. The reversal of 79445746277 is 77264754497.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48717759841 + 30727986436 = 220721^2 + 175294^2 .

It is a cyclic number.

It is not a de Polignac number, because 79445746277 - 2³² = 75150778981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79445766277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76242998 + ... + 76244039.

It is an arithmetic number, because the mean of its divisors is an integer number (19899558459).

Almost surely, 2^79445746277 is an apocalyptic number.

It is an amenable number.

79445746277 is a deficient number, since it is larger than the sum of its proper divisors (152487559).

79445746277 is a wasteful number, since it uses less digits than its factorization.

79445746277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152487558.

The product of its digits is 82978560, while the sum is 62.

The spelling of 79445746277 in words is "seventy-nine billion, four hundred forty-five million, seven hundred forty-six thousand, two hundred seventy-seven".