79091950577 has 6 divisors (see below), whose sum is σ = 83745646038. Its totient is φ = 74438391552.

The previous prime is 79091950571. The next prime is 79091950583. The reversal of 79091950577 is 77505919097.

It is an interprime number because it is at equal distance from previous prime (79091950571) and next prime (79091950583).

It can be written as a sum of positive squares in 3 ways, for example, as 19188898576 + 59903052001 = 138524^2 + 244751^2 .

It is not a de Polignac number, because 79091950577 - 2⁶ = 79091950513 is a prime.

It is a super-2 number, since 2×79091950577² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79091950571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1125449 + ... + 1193657.

It is an arithmetic number, because the mean of its divisors is an integer number (13957607673).

Almost surely, 2^79091950577 is an apocalyptic number.

It is an amenable number.

79091950577 is a deficient number, since it is larger than the sum of its proper divisors (4653695461).

79091950577 is an frugal number, since it uses more digits than its factorization.

79091950577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136435 (or 68226 counting only the distinct ones).

The product of its (nonzero) digits is 6251175, while the sum is 59.

The spelling of 79091950577 in words is "seventy-nine billion, ninety-one million, nine hundred fifty thousand, five hundred seventy-seven".