91842500168 has 16 divisors (see below), whose sum is σ = 173156097660. Its totient is φ = 45667540800.

The previous prime is 91842500131. The next prime is 91842500173. The reversal of 91842500168 is 86100524819.

It can be written as a sum of positive squares in 2 ways, for example, as 69096431044 + 22746069124 = 262862^2 + 150818^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31712123 + ... + 31715018.

Almost surely, 2^91842500168 is an apocalyptic number.

It is an amenable number.

91842500168 is a deficient number, since it is larger than the sum of its proper divisors (81313597492).

91842500168 is a wasteful number, since it uses less digits than its factorization.

91842500168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63427328 (or 63427324 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 91842500168 in words is "ninety-one billion, eight hundred forty-two million, five hundred thousand, one hundred sixty-eight".