91364196877 has 4 divisors (see below), whose sum is σ = 91376065440. Its totient is φ = 91352328316.

The previous prime is 91364196871. The next prime is 91364196883. The reversal of 91364196877 is 77869146319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (91364196871) and next prime (91364196883).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91364196877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91364196871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5922727 + ... + 5938132.

It is an arithmetic number, because the mean of its divisors is an integer number (22844016360).

Almost surely, 2^91364196877 is an apocalyptic number.

It is an amenable number.

91364196877 is a deficient number, since it is larger than the sum of its proper divisors (11868563).

91364196877 is a wasteful number, since it uses less digits than its factorization.

91364196877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868562.

The product of its digits is 13716864, while the sum is 61.

The spelling of 91364196877 in words is "ninety-one billion, three hundred sixty-four million, one hundred ninety-six thousand, eight hundred seventy-seven".