91672666583 has 8 divisors (see below), whose sum is σ = 100196311680. Its totient is φ = 83496925440.

The previous prime is 91672666543. The next prime is 91672666621. The reversal of 91672666583 is 38566627619.

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 91672666583 - 2²⁰ = 91671618007 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 (91672666523) 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, 86975438 + ... + 86976491.

It is an arithmetic number, because the mean of its divisors is an integer number (12524538960).

Almost surely, 2^91672666583 is an apocalyptic number.

91672666583 is a deficient number, since it is larger than the sum of its proper divisors (8523645097).

91672666583 is a wasteful number, since it uses less digits than its factorization.

91672666583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173951977.

The product of its digits is 19595520, while the sum is 59.

The spelling of 91672666583 in words is "ninety-one billion, six hundred seventy-two million, six hundred sixty-six thousand, five hundred eighty-three".