91454688645119 has 2 divisors, whose sum is σ = 91454688645120. Its totient is φ = 91454688645118.

The previous prime is 91454688645101. The next prime is 91454688645179. The reversal of 91454688645119 is 91154688645419.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91454688645119 is a prime.

It is a super-2 number, since 2×91454688645119² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91454688645179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45727344322559 + 45727344322560.

It is an arithmetic number, because the mean of its divisors is an integer number (45727344322560).

Almost surely, 2^{91454688645119} is an apocalyptic number.

91454688645119 is a deficient number, since it is larger than the sum of its proper divisors (1).

91454688645119 is an equidigital number, since it uses as much as digits as its factorization.

91454688645119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 298598400, while the sum is 71.

The spelling of 91454688645119 in words is "ninety-one trillion, four hundred fifty-four billion, six hundred eighty-eight million, six hundred forty-five thousand, one hundred nineteen".