91900318925629 has 2 divisors, whose sum is σ = 91900318925630. Its totient is φ = 91900318925628.

The previous prime is 91900318925521. The next prime is 91900318925647. The reversal of 91900318925629 is 92652981300919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63305653555225 + 28594665370404 = 7956485^2 + 5347398^2 .

It is a cyclic number.

It is not a de Polignac number, because 91900318925629 - 2²⁵ = 91900285371197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91900318925659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45950159462814 + 45950159462815.

It is an arithmetic number, because the mean of its divisors is an integer number (45950159462815).

Almost surely, 2^{91900318925629} is an apocalyptic number.

It is an amenable number.

91900318925629 is a deficient number, since it is larger than the sum of its proper divisors (1).

91900318925629 is an equidigital number, since it uses as much as digits as its factorization.

91900318925629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18895680, while the sum is 64.

The spelling of 91900318925629 in words is "ninety-one trillion, nine hundred billion, three hundred eighteen million, nine hundred twenty-five thousand, six hundred twenty-nine".