23662494376921 has 9 divisors (see below), whose sum is σ = 23683970763999. Its totient is φ = 23641037460000.

The previous prime is 23662494376907. The next prime is 23662494376931. The reversal of 23662494376921 is 12967349426632.

The square root of 23662494376921 is 4864411.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14833751834521 + 8828742542400 = 3851461^2 + 2971320^2 .

It is not a de Polignac number, because 23662494376921 - 2¹¹ = 23662494374873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23662494376931) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10511991046 + ... + 10511993296.

It is an arithmetic number, because the mean of its divisors is an integer number (2631552307111).

Almost surely, 2^{23662494376921} is an apocalyptic number.

23662494376921 is the 4864411-st square number.

23662494376921 is the 2432206-th centered octagonal number.

It is an amenable number.

23662494376921 is a deficient number, since it is larger than the sum of its proper divisors (21476387078).

23662494376921 is an frugal number, since it uses more digits than its factorization.

23662494376921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8824 (or 4412 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 64.

The spelling of 23662494376921 in words is "twenty-three trillion, six hundred sixty-two billion, four hundred ninety-four million, three hundred seventy-six thousand, nine hundred twenty-one".