91294018601 has 2 divisors, whose sum is σ = 91294018602. Its totient is φ = 91294018600.

The previous prime is 91294018591. The next prime is 91294018637. The reversal of 91294018601 is 10681049219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91294018201 + 400 = 302149^2 + 20^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91294018601 is a prime.

It is not a weakly prime, because it can be changed into another prime (91294018901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45647009300 + 45647009301.

It is an arithmetic number, because the mean of its divisors is an integer number (45647009301).

Almost surely, 2^91294018601 is an apocalyptic number.

It is an amenable number.

91294018601 is a deficient number, since it is larger than the sum of its proper divisors (1).

91294018601 is an equidigital number, since it uses as much as digits as its factorization.

91294018601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 91294018601 in words is "ninety-one billion, two hundred ninety-four million, eighteen thousand, six hundred one".