91403596714561 has 2 divisors, whose sum is σ = 91403596714562. Its totient is φ = 91403596714560.

The previous prime is 91403596714499. The next prime is 91403596714567. The reversal of 91403596714561 is 16541769530419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90517033233936 + 886563480625 = 9514044^2 + 941575^2 .

It is a cyclic number.

It is not a de Polignac number, because 91403596714561 - 2⁷ = 91403596714433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91403596714561.

It is not a weakly prime, because it can be changed into another prime (91403596714567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45701798357280 + 45701798357281.

It is an arithmetic number, because the mean of its divisors is an integer number (45701798357281).

Almost surely, 2^{91403596714561} is an apocalyptic number.

It is an amenable number.

91403596714561 is a deficient number, since it is larger than the sum of its proper divisors (1).

91403596714561 is an equidigital number, since it uses as much as digits as its factorization.

91403596714561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 91403596714561 in words is "ninety-one trillion, four hundred three billion, five hundred ninety-six million, seven hundred fourteen thousand, five hundred sixty-one".