91135796977 has 8 divisors (see below), whose sum is σ = 93259631520. Its totient is φ = 89012162400.

The previous prime is 91135796933. The next prime is 91135797083. The reversal of 91135796977 is 77969753119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91135796977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91135796377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278477 + ... + 1347877.

It is an arithmetic number, because the mean of its divisors is an integer number (11657453940).

Almost surely, 2^91135796977 is an apocalyptic number.

It is an amenable number.

91135796977 is a deficient number, since it is larger than the sum of its proper divisors (2123834543).

91135796977 is a wasteful number, since it uses less digits than its factorization.

91135796977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99983.

The product of its digits is 22504230, while the sum is 64.

The spelling of 91135796977 in words is "ninety-one billion, one hundred thirty-five million, seven hundred ninety-six thousand, nine hundred seventy-seven".