91954975151 has 24 divisors (see below), whose sum is σ = 104971751424. Its totient is φ = 80395454880.

The previous prime is 91954975141. The next prime is 91954975187. The reversal of 91954975151 is 15157945919.

It is a happy number.

It is not a de Polignac number, because 91954975151 - 2¹⁸ = 91954713007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91954975141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59510 + ... + 432956.

It is an arithmetic number, because the mean of its divisors is an integer number (4373822976).

Almost surely, 2^91954975151 is an apocalyptic number.

91954975151 is a deficient number, since it is larger than the sum of its proper divisors (13016776273).

91954975151 is a wasteful number, since it uses less digits than its factorization.

91954975151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373551 (or 373538 counting only the distinct ones).

The product of its digits is 2551500, while the sum is 56.

The spelling of 91954975151 in words is "ninety-one billion, nine hundred fifty-four million, nine hundred seventy-five thousand, one hundred fifty-one".