23626532421 has 6 divisors (see below), whose sum is σ = 34127213510. Its totient is φ = 15751021608.

The previous prime is 23626532399. The next prime is 23626532453. The reversal of 23626532421 is 12423562632.

23626532421 is a `hidden beast` number, since 2 + 3 + 626 + 5 + 3 + 2 + 4 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15138595521 + 8487936900 = 123039^2 + 92130^2 .

It is not a de Polignac number, because 23626532421 - 2⁵ = 23626532389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23626532821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1312585126 + ... + 1312585143.

Almost surely, 2^23626532421 is an apocalyptic number.

It is an amenable number.

23626532421 is a deficient number, since it is larger than the sum of its proper divisors (10500681089).

23626532421 is a wasteful number, since it uses less digits than its factorization.

23626532421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625170275 (or 2625170272 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The spelling of 23626532421 in words is "twenty-three billion, six hundred twenty-six million, five hundred thirty-two thousand, four hundred twenty-one".