91233893377 has 8 divisors (see below), whose sum is σ = 99758812032. Its totient is φ = 82747462800.

The previous prime is 91233893371. The next prime is 91233893381. The reversal of 91233893377 is 77339833219.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91233893377 - 2³ = 91233893369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91233893371) 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, 9617058 + ... + 9626539.

It is an arithmetic number, because the mean of its divisors is an integer number (12469851504).

Almost surely, 2^91233893377 is an apocalyptic number.

It is an amenable number.

91233893377 is a deficient number, since it is larger than the sum of its proper divisors (8524918655).

91233893377 is a wasteful number, since it uses less digits than its factorization.

91233893377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19244039.

The product of its digits is 5143824, while the sum is 55.

The spelling of 91233893377 in words is "ninety-one billion, two hundred thirty-three million, eight hundred ninety-three thousand, three hundred seventy-seven".