23532442521 has 24 divisors (see below), whose sum is σ = 36786723840. Its totient is φ = 13341216672.

The previous prime is 23532442513. The next prime is 23532442523. The reversal of 23532442521 is 12524423532.

It is not a de Polignac number, because 23532442521 - 2³ = 23532442513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23532442523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 611586 + ... + 648923.

It is an arithmetic number, because the mean of its divisors is an integer number (1532780160).

Almost surely, 2^23532442521 is an apocalyptic number.

23532442521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23532442521 is a deficient number, since it is larger than the sum of its proper divisors (13254281319).

23532442521 is a wasteful number, since it uses less digits than its factorization.

23532442521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260653 (or 1260646 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The spelling of 23532442521 in words is "twenty-three billion, five hundred thirty-two million, four hundred forty-two thousand, five hundred twenty-one".