91058972413 has 2 divisors, whose sum is σ = 91058972414. Its totient is φ = 91058972412.

The previous prime is 91058972393. The next prime is 91058972449. The reversal of 91058972413 is 31427985019.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84461146884 + 6597825529 = 290622^2 + 81227^2 .

It is a cyclic number.

It is not a de Polignac number, because 91058972413 - 2²⁵ = 91025417981 is a prime.

It is a super-2 number, since 2×91058972413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91058972483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45529486206 + 45529486207.

It is an arithmetic number, because the mean of its divisors is an integer number (45529486207).

Almost surely, 2^91058972413 is an apocalyptic number.

It is an amenable number.

91058972413 is a deficient number, since it is larger than the sum of its proper divisors (1).

91058972413 is an equidigital number, since it uses as much as digits as its factorization.

91058972413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 91058972413 in words is "ninety-one billion, fifty-eight million, nine hundred seventy-two thousand, four hundred thirteen".