78907118401 has 4 divisors (see below), whose sum is σ = 78909201072. Its totient is φ = 78905035732.

The previous prime is 78907118399. The next prime is 78907118443. The reversal of 78907118401 is 10481170987.

It is a happy number.

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 78907118401 - 2¹ = 78907118399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78907118201) 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, 983431 + ... + 1060636.

It is an arithmetic number, because the mean of its divisors is an integer number (19727300268).

Almost surely, 2^78907118401 is an apocalyptic number.

It is an amenable number.

78907118401 is a deficient number, since it is larger than the sum of its proper divisors (2082671).

78907118401 is a wasteful number, since it uses less digits than its factorization.

78907118401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082670.

The product of its (nonzero) digits is 112896, while the sum is 46.

The spelling of 78907118401 in words is "seventy-eight billion, nine hundred seven million, one hundred eighteen thousand, four hundred one".