23686736349969 has 48 divisors (see below), whose sum is σ = 43461475634304. Its totient is φ = 12072632083200.

The previous prime is 23686736349923. The next prime is 23686736349977. The reversal of 23686736349969 is 96994363768632.

23686736349969 is a `hidden beast` number, since 2 + 3 + 6 + 8 + 6 + 7 + 3 + 63 + 499 + 69 = 666.

It is not a de Polignac number, because 23686736349969 - 2²¹ = 23686734252817 is a prime.

It is a super-2 number, since 2×23686736349969² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23686756349969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 322416052 + ... + 322489509.

It is an arithmetic number, because the mean of its divisors is an integer number (905447409048).

Almost surely, 2^{23686736349969} is an apocalyptic number.

It is an amenable number.

23686736349969 is a deficient number, since it is larger than the sum of its proper divisors (19774739284335).

23686736349969 is a wasteful number, since it uses less digits than its factorization.

23686736349969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644905638 (or 644905635 counting only the distinct ones).

The product of its digits is 11428107264, while the sum is 81.

The spelling of 23686736349969 in words is "twenty-three trillion, six hundred eighty-six billion, seven hundred thirty-six million, three hundred forty-nine thousand, nine hundred sixty-nine".