79007877401 has 4 divisors (see below), whose sum is σ = 79008475392. Its totient is φ = 79007279412.

The previous prime is 79007877397. The next prime is 79007877407. The reversal of 79007877401 is 10477870097.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 79007877401 - 2² = 79007877397 is a prime.

It is a super-2 number, since 2×79007877401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79007877401.

It is not an unprimeable number, because it can be changed into a prime (79007877407) 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, 3401 + ... + 397526.

It is an arithmetic number, because the mean of its divisors is an integer number (19752118848).

Almost surely, 2^79007877401 is an apocalyptic number.

It is an amenable number.

79007877401 is a deficient number, since it is larger than the sum of its proper divisors (597991).

79007877401 is a wasteful number, since it uses less digits than its factorization.

79007877401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597990.

The product of its (nonzero) digits is 691488, while the sum is 50.

The spelling of 79007877401 in words is "seventy-nine billion, seven million, eight hundred seventy-seven thousand, four hundred one".