78831903693 has 16 divisors (see below), whose sum is σ = 105930405056. Its totient is φ = 52145078400.

The previous prime is 78831903613. The next prime is 78831903701. The reversal of 78831903693 is 39630913887.

It is not a de Polignac number, because 78831903693 - 2²⁴ = 78815126477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78831903613) 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, 159771 + ... + 428007.

It is an arithmetic number, because the mean of its divisors is an integer number (6620650316).

Almost surely, 2^78831903693 is an apocalyptic number.

It is an amenable number.

78831903693 is a deficient number, since it is larger than the sum of its proper divisors (27098501363).

78831903693 is a wasteful number, since it uses less digits than its factorization.

78831903693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269004.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 78831903693 in words is "seventy-eight billion, eight hundred thirty-one million, nine hundred three thousand, six hundred ninety-three".