23553357057 has 12 divisors (see below), whose sum is σ = 34025325204. Its totient is φ = 15700479840.

The previous prime is 23553357031. The next prime is 23553357077. The reversal of 23553357057 is 75075335532.

23553357057 is a `hidden beast` number, since 23 + 5 + 5 + 3 + 3 + 570 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21585192561 + 1968164496 = 146919^2 + 44364^2 .

It is not a de Polignac number, because 23553357057 - 2²³ = 23544968449 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23553357077) 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 11 ways as a sum of consecutive naturals, for example, 58918 + ... + 224895.

It is an arithmetic number, because the mean of its divisors is an integer number (2835443767).

Almost surely, 2^23553357057 is an apocalyptic number.

It is an amenable number.

23553357057 is a deficient number, since it is larger than the sum of its proper divisors (10471968147).

23553357057 is a wasteful number, since it uses less digits than its factorization.

23553357057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293040 (or 293037 counting only the distinct ones).

The product of its (nonzero) digits is 1653750, while the sum is 45.

The spelling of 23553357057 in words is "twenty-three billion, five hundred fifty-three million, three hundred fifty-seven thousand, fifty-seven".