78459157677 has 16 divisors (see below), whose sum is σ = 105927545088. Its totient is φ = 51651855360.

The previous prime is 78459157649. The next prime is 78459157681. The reversal of 78459157677 is 77675195487.

It is not a de Polignac number, because 78459157677 - 2³⁶ = 9739680941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78459157627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335148 + ... + 518885.

It is an arithmetic number, because the mean of its divisors is an integer number (6620471568).

Almost surely, 2^78459157677 is an apocalyptic number.

It is an amenable number.

78459157677 is a deficient number, since it is larger than the sum of its proper divisors (27468387411).

78459157677 is a wasteful number, since it uses less digits than its factorization.

78459157677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854420.

The product of its digits is 103723200, while the sum is 66.

The spelling of 78459157677 in words is "seventy-eight billion, four hundred fifty-nine million, one hundred fifty-seven thousand, six hundred seventy-seven".