33136863121 has 2 divisors, whose sum is σ = 33136863122. Its totient is φ = 33136863120.

The previous prime is 33136863107. The next prime is 33136863167. The reversal of 33136863121 is 12136863133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30289573521 + 2847289600 = 174039^2 + 53360^2 .

It is a cyclic number.

It is not a de Polignac number, because 33136863121 - 2¹¹ = 33136861073 is a prime.

It is not a weakly prime, because it can be changed into another prime (33136863101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16568431560 + 16568431561.

It is an arithmetic number, because the mean of its divisors is an integer number (16568431561).

Almost surely, 2^33136863121 is an apocalyptic number.

It is an amenable number.

33136863121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33136863121 is an equidigital number, since it uses as much as digits as its factorization.

33136863121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The spelling of 33136863121 in words is "thirty-three billion, one hundred thirty-six million, eight hundred sixty-three thousand, one hundred twenty-one".