79797457601 has 4 divisors (see below), whose sum is σ = 82549094100. Its totient is φ = 77045821104.

The previous prime is 79797457589. The next prime is 79797457613. The reversal of 79797457601 is 10675479797.

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

It is an interprime number because it is at equal distance from previous prime (79797457589) and next prime (79797457613).

It can be written as a sum of positive squares in 2 ways, for example, as 51413295025 + 28384162576 = 226745^2 + 168476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79797457601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79797457651) 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, 1375818206 + ... + 1375818263.

It is an arithmetic number, because the mean of its divisors is an integer number (20637273525).

Almost surely, 2^79797457601 is an apocalyptic number.

It is an amenable number.

79797457601 is a deficient number, since it is larger than the sum of its proper divisors (2751636499).

79797457601 is a wasteful number, since it uses less digits than its factorization.

79797457601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751636498.

The product of its (nonzero) digits is 23337720, while the sum is 62.

The spelling of 79797457601 in words is "seventy-nine billion, seven hundred ninety-seven million, four hundred fifty-seven thousand, six hundred one".