91694973465 has 48 divisors (see below), whose sum is σ = 167367170880. Its totient is φ = 46312352640.

The previous prime is 91694973443. The next prime is 91694973521. The reversal of 91694973465 is 56437949619.

91694973465 is a `hidden beast` number, since 9 + 1 + 69 + 49 + 73 + 465 = 666.

It is not a de Polignac number, because 91694973465 - 2¹² = 91694969369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2377435 + ... + 2415695.

It is an arithmetic number, because the mean of its divisors is an integer number (3486816060).

Almost surely, 2^91694973465 is an apocalyptic number.

91694973465 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

91694973465 is a deficient number, since it is larger than the sum of its proper divisors (75672197415).

91694973465 is a wasteful number, since it uses less digits than its factorization.

91694973465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41094 (or 41091 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The spelling of 91694973465 in words is "ninety-one billion, six hundred ninety-four million, nine hundred seventy-three thousand, four hundred sixty-five".