17996035121 has 2 divisors, whose sum is σ = 17996035122. Its totient is φ = 17996035120.

The previous prime is 17996035097. The next prime is 17996035147. The reversal of 17996035121 is 12153069971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15771592225 + 2224442896 = 125585^2 + 47164^2 .

It is a cyclic number.

It is not a de Polignac number, because 17996035121 - 2²² = 17991840817 is a prime.

It is not a weakly prime, because it can be changed into another prime (17996035021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8998017560 + 8998017561.

It is an arithmetic number, because the mean of its divisors is an integer number (8998017561).

Almost surely, 2^17996035121 is an apocalyptic number.

It is an amenable number.

17996035121 is a deficient number, since it is larger than the sum of its proper divisors (1).

17996035121 is an equidigital number, since it uses as much as digits as its factorization.

17996035121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 17996035121 in words is "seventeen billion, nine hundred ninety-six million, thirty-five thousand, one hundred twenty-one".