33531121064957 has 2 divisors, whose sum is σ = 33531121064958. Its totient is φ = 33531121064956.

The previous prime is 33531121064933. The next prime is 33531121064971. The reversal of 33531121064957 is 75946012113533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33219476885956 + 311644179001 = 5763634^2 + 558251^2 .

It is an emirp because it is prime and its reverse (75946012113533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33531121064957 - 2¹⁰ = 33531121063933 is a prime.

It is a super-2 number, since 2×33531121064957² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33531121264957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16765560532478 + 16765560532479.

It is an arithmetic number, because the mean of its divisors is an integer number (16765560532479).

Almost surely, 2^{33531121064957} is an apocalyptic number.

It is an amenable number.

33531121064957 is a deficient number, since it is larger than the sum of its proper divisors (1).

33531121064957 is an equidigital number, since it uses as much as digits as its factorization.

33531121064957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 33531121064957 in words is "thirty-three trillion, five hundred thirty-one billion, one hundred twenty-one million, sixty-four thousand, nine hundred fifty-seven".