91162742698 has 16 divisors (see below), whose sum is σ = 136917058176. Its totient is φ = 45523754640.

The previous prime is 91162742663. The next prime is 91162742701. The reversal of 91162742698 is 89624726119.

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, 8544115 + ... + 8554777.

It is an arithmetic number, because the mean of its divisors is an integer number (8557316136).

Almost surely, 2^91162742698 is an apocalyptic number.

91162742698 is a deficient number, since it is larger than the sum of its proper divisors (45754315478).

91162742698 is a wasteful number, since it uses less digits than its factorization.

91162742698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15669.

The product of its digits is 2612736, while the sum is 55.

The spelling of 91162742698 in words is "ninety-one billion, one hundred sixty-two million, seven hundred forty-two thousand, six hundred ninety-eight".