91673384464 has 40 divisors (see below), whose sum is σ = 180124533792. Its totient is φ = 45191892480.

The previous prime is 91673384417. The next prime is 91673384483. The reversal of 91673384464 is 46448337619.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581752 + ... + 722344.

Almost surely, 2^91673384464 is an apocalyptic number.

It is an amenable number.

91673384464 is a deficient number, since it is larger than the sum of its proper divisors (88451149328).

91673384464 is a wasteful number, since it uses less digits than its factorization.

91673384464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141175 (or 141169 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 55.

The spelling of 91673384464 in words is "ninety-one billion, six hundred seventy-three million, three hundred eighty-four thousand, four hundred sixty-four".