91672666584 has 16 divisors (see below), whose sum is σ = 229181666520. Its totient is φ = 30557555520.

The previous prime is 91672666543. The next prime is 91672666621. The reversal of 91672666584 is 48566627619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1909847197 + ... + 1909847244.

Almost surely, 2^91672666584 is an apocalyptic number.

It is an amenable number.

91672666584 is an abundant number, since it is smaller than the sum of its proper divisors (137508999936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91672666584 is a wasteful number, since it uses less digits than its factorization.

91672666584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819694450 (or 3819694446 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The spelling of 91672666584 in words is "ninety-one billion, six hundred seventy-two million, six hundred sixty-six thousand, five hundred eighty-four".