91138800164407 has 2 divisors, whose sum is σ = 91138800164408. Its totient is φ = 91138800164406.

The previous prime is 91138800164371. The next prime is 91138800164411. The reversal of 91138800164407 is 70446100883119.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91138800164407 - 2¹¹ = 91138800162359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91138800164417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45569400082203 + 45569400082204.

It is an arithmetic number, because the mean of its divisors is an integer number (45569400082204).

Almost surely, 2^{91138800164407} is an apocalyptic number.

91138800164407 is a deficient number, since it is larger than the sum of its proper divisors (1).

91138800164407 is an equidigital number, since it uses as much as digits as its factorization.

91138800164407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 91138800164407 in words is "ninety-one trillion, one hundred thirty-eight billion, eight hundred million, one hundred sixty-four thousand, four hundred seven".