23133550537 has 2 divisors, whose sum is σ = 23133550538. Its totient is φ = 23133550536.

The previous prime is 23133550483. The next prime is 23133550579. The reversal of 23133550537 is 73505533132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15772596921 + 7360953616 = 125589^2 + 85796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23133550537 is a prime.

It is a super-2 number, since 2×23133550537² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23133550496 and 23133550505.

It is not a weakly prime, because it can be changed into another prime (23133550597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11566775268 + 11566775269.

It is an arithmetic number, because the mean of its divisors is an integer number (11566775269).

Almost surely, 2^23133550537 is an apocalyptic number.

It is an amenable number.

23133550537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23133550537 is an equidigital number, since it uses as much as digits as its factorization.

23133550537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 37.

The spelling of 23133550537 in words is "twenty-three billion, one hundred thirty-three million, five hundred fifty thousand, five hundred thirty-seven".