91123383007 has 4 divisors (see below), whose sum is σ = 91180948320. Its totient is φ = 91065817696.

The previous prime is 91123382993. The next prime is 91123383047. The reversal of 91123383007 is 70038332119.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91123383007 - 2⁷ = 91123382879 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 (91123383047) 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, 28780282 + ... + 28783447.

It is an arithmetic number, because the mean of its divisors is an integer number (22795237080).

Almost surely, 2^91123383007 is an apocalyptic number.

91123383007 is a deficient number, since it is larger than the sum of its proper divisors (57565313).

91123383007 is a wasteful number, since it uses less digits than its factorization.

91123383007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57565312.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 91123383007 in words is "ninety-one billion, one hundred twenty-three million, three hundred eighty-three thousand, seven".