33442257997 has 2 divisors, whose sum is σ = 33442257998. Its totient is φ = 33442257996.

The previous prime is 33442257977. The next prime is 33442258043. The reversal of 33442257997 is 79975224433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29921734441 + 3520523556 = 172979^2 + 59334^2 .

It is a cyclic number.

It is not a de Polignac number, because 33442257997 - 2¹⁹ = 33441733709 is a prime.

It is a super-2 number, since 2×33442257997² (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 (33442257977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16721128998 + 16721128999.

It is an arithmetic number, because the mean of its divisors is an integer number (16721128999).

Almost surely, 2^33442257997 is an apocalyptic number.

It is an amenable number.

33442257997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33442257997 is an equidigital number, since it uses as much as digits as its factorization.

33442257997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 55.

The spelling of 33442257997 in words is "thirty-three billion, four hundred forty-two million, two hundred fifty-seven thousand, nine hundred ninety-seven".