23686420077187 has 32 divisors (see below), whose sum is σ = 29296528128000. Its totient is φ = 18698507607168.

The previous prime is 23686420077179. The next prime is 23686420077283. The reversal of 23686420077187 is 78177002468632.

It is a cyclic number.

It is not a de Polignac number, because 23686420077187 - 2³ = 23686420077179 is a prime.

It is a super-2 number, since 2×23686420077187² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23686420077127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11784108 + ... + 13646905.

It is an arithmetic number, because the mean of its divisors is an integer number (915516504000).

Almost surely, 2^{23686420077187} is an apocalyptic number.

23686420077187 is a deficient number, since it is larger than the sum of its proper divisors (5610108050813).

23686420077187 is a wasteful number, since it uses less digits than its factorization.

23686420077187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25431235.

The product of its (nonzero) digits is 37933056, while the sum is 61.

The spelling of 23686420077187 in words is "twenty-three trillion, six hundred eighty-six billion, four hundred twenty million, seventy-seven thousand, one hundred eighty-seven".