91955916898 has 8 divisors (see below), whose sum is σ = 137935198800. Its totient is φ = 45977517300.

The previous prime is 91955916883. The next prime is 91955916907. The reversal of 91955916898 is 89861955919.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 201553 + ... + 473851.

It is an arithmetic number, because the mean of its divisors is an integer number (17241899850).

Almost surely, 2^91955916898 is an apocalyptic number.

91955916898 is a deficient number, since it is larger than the sum of its proper divisors (45979281902).

91955916898 is a wasteful number, since it uses less digits than its factorization.

91955916898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441152.

The product of its digits is 62985600, while the sum is 70.

The spelling of 91955916898 in words is "ninety-one billion, nine hundred fifty-five million, nine hundred sixteen thousand, eight hundred ninety-eight".