33442131157 has 2 divisors, whose sum is σ = 33442131158. Its totient is φ = 33442131156.

The previous prime is 33442131133. The next prime is 33442131161. The reversal of 33442131157 is 75113124433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31630266801 + 1811864356 = 177849^2 + 42566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33442131157 is a prime.

It is a super-2 number, since 2×33442131157² (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 (33442131257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16721065578 + 16721065579.

It is an arithmetic number, because the mean of its divisors is an integer number (16721065579).

Almost surely, 2^33442131157 is an apocalyptic number.

It is an amenable number.

33442131157 is a deficient number, since it is larger than the sum of its proper divisors (1).

33442131157 is an equidigital number, since it uses as much as digits as its factorization.

33442131157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The spelling of 33442131157 in words is "thirty-three billion, four hundred forty-two million, one hundred thirty-one thousand, one hundred fifty-seven".