23533245621 has 6 divisors (see below), whose sum is σ = 33992465910. Its totient is φ = 15688830408.

The previous prime is 23533245599. The next prime is 23533245629. The reversal of 23533245621 is 12654233532.

23533245621 is a `hidden beast` number, since 2 + 3 + 5 + 3 + 3 + 24 + 5 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14077822500 + 9455423121 = 118650^2 + 97239^2 .

It is not a de Polignac number, because 23533245621 - 2³⁰ = 22459503797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23533245629) 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 5 ways as a sum of consecutive naturals, for example, 1307402526 + ... + 1307402543.

It is an arithmetic number, because the mean of its divisors is an integer number (5665410985).

Almost surely, 2^23533245621 is an apocalyptic number.

It is an amenable number.

23533245621 is a deficient number, since it is larger than the sum of its proper divisors (10459220289).

23533245621 is a wasteful number, since it uses less digits than its factorization.

23533245621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614805075 (or 2614805072 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The spelling of 23533245621 in words is "twenty-three billion, five hundred thirty-three million, two hundred forty-five thousand, six hundred twenty-one".