23215525533 has 16 divisors (see below), whose sum is σ = 36416511360. Its totient is φ = 14566603968.

The previous prime is 23215525519. The next prime is 23215525547. The reversal of 23215525533 is 33552551232.

23215525533 is a `hidden beast` number, since 2 + 3 + 21 + 552 + 55 + 33 = 666.

It is an interprime number because it is at equal distance from previous prime (23215525519) and next prime (23215525547).

It is not a de Polignac number, because 23215525533 - 2⁴ = 23215525517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23215525513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25288785 + ... + 25289702.

It is an arithmetic number, because the mean of its divisors is an integer number (2276031960).

Almost surely, 2^23215525533 is an apocalyptic number.

It is an amenable number.

23215525533 is a deficient number, since it is larger than the sum of its proper divisors (13200985827).

23215525533 is a wasteful number, since it uses less digits than its factorization.

23215525533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50578513 (or 50578507 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The spelling of 23215525533 in words is "twenty-three billion, two hundred fifteen million, five hundred twenty-five thousand, five hundred thirty-three".