79874182077 has 4 divisors (see below), whose sum is σ = 106498909440. Its totient is φ = 53249454716.

The previous prime is 79874182033. The next prime is 79874182079. The reversal of 79874182077 is 77028147897.

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.

It is a cyclic number.

It is not a de Polignac number, because 79874182077 - 2⁶ = 79874182013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79874182077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79874182079) 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, 13312363677 + ... + 13312363682.

It is an arithmetic number, because the mean of its divisors is an integer number (26624727360).

Almost surely, 2^79874182077 is an apocalyptic number.

It is an amenable number.

79874182077 is a deficient number, since it is larger than the sum of its proper divisors (26624727363).

79874182077 is a wasteful number, since it uses less digits than its factorization.

79874182077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26624727362.

The product of its (nonzero) digits is 11063808, while the sum is 60.

The spelling of 79874182077 in words is "seventy-nine billion, eight hundred seventy-four million, one hundred eighty-two thousand, seventy-seven".