33231451157 has 2 divisors, whose sum is σ = 33231451158. Its totient is φ = 33231451156.

The previous prime is 33231451147. The next prime is 33231451163. The reversal of 33231451157 is 75115413233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19598320036 + 13633131121 = 139994^2 + 116761^2 .

It is a cyclic number.

It is not a de Polignac number, because 33231451157 - 2²⁰ = 33230402581 is a prime.

It is a super-2 number, since 2×33231451157² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33231451147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16615725578 + 16615725579.

It is an arithmetic number, because the mean of its divisors is an integer number (16615725579).

Almost surely, 2^33231451157 is an apocalyptic number.

It is an amenable number.

33231451157 is a deficient number, since it is larger than the sum of its proper divisors (1).

33231451157 is an equidigital number, since it uses as much as digits as its factorization.

33231451157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The spelling of 33231451157 in words is "thirty-three billion, two hundred thirty-one million, four hundred fifty-one thousand, one hundred fifty-seven".