78508662423 has 16 divisors (see below), whose sum is σ = 106466227200. Its totient is φ = 51450890400.

The previous prime is 78508662391. The next prime is 78508662443. The reversal of 78508662423 is 32426680587.

It is not a de Polignac number, because 78508662423 - 2⁵ = 78508662391 is a prime.

It is a super-2 number, since 2×78508662423² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78508662443) 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, 669003 + ... + 777548.

It is an arithmetic number, because the mean of its divisors is an integer number (6654139200).

Almost surely, 2^78508662423 is an apocalyptic number.

78508662423 is a deficient number, since it is larger than the sum of its proper divisors (27957564777).

78508662423 is a wasteful number, since it uses less digits than its factorization.

78508662423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446862.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 78508662423 in words is "seventy-eight billion, five hundred eight million, six hundred sixty-two thousand, four hundred twenty-three".