78718887023 has 16 divisors (see below), whose sum is σ = 95180152320. Its totient is φ = 63597604896.

The previous prime is 78718887001. The next prime is 78718887043. The reversal of 78718887023 is 32078881787.

It is not a de Polignac number, because 78718887023 - 2²⁶ = 78651778159 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 (78718887043) 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, 1476011 + ... + 1528412.

It is an arithmetic number, because the mean of its divisors is an integer number (5948759520).

Almost surely, 2^78718887023 is an apocalyptic number.

78718887023 is a deficient number, since it is larger than the sum of its proper divisors (16461265297).

78718887023 is a wasteful number, since it uses less digits than its factorization.

78718887023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004646.

The product of its (nonzero) digits is 8429568, while the sum is 59.

The spelling of 78718887023 in words is "seventy-eight billion, seven hundred eighteen million, eight hundred eighty-seven thousand, twenty-three".