23659140981 has 16 divisors (see below), whose sum is σ = 36087436800. Its totient is φ = 13506229488.

The previous prime is 23659140929. The next prime is 23659140997. The reversal of 23659140981 is 18904195632.

It is not a de Polignac number, because 23659140981 - 2⁹ = 23659140469 is a prime.

It is a super-2 number, since 2×23659140981² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23659140981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23659140781) 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, 531411 + ... + 574208.

It is an arithmetic number, because the mean of its divisors is an integer number (2255464800).

Almost surely, 2^23659140981 is an apocalyptic number.

23659140981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23659140981 is a deficient number, since it is larger than the sum of its proper divisors (12428295819).

23659140981 is a wasteful number, since it uses less digits than its factorization.

23659140981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106648.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 23659140981 in words is "twenty-three billion, six hundred fifty-nine million, one hundred forty thousand, nine hundred eighty-one".