91495124506 has 4 divisors (see below), whose sum is σ = 137242686762. Its totient is φ = 45747562252.

The previous prime is 91495124449. The next prime is 91495124521. The reversal of 91495124506 is 60542159419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60542159419 = 7 ⋅8648879917.

It can be written as a sum of positive squares in only one way, i.e., 55227350025 + 36267774481 = 235005^2 + 190441^2 .

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 as a sum of consecutive naturals, namely, 22873781125 + ... + 22873781128.

Almost surely, 2^91495124506 is an apocalyptic number.

91495124506 is a deficient number, since it is larger than the sum of its proper divisors (45747562256).

91495124506 is a wasteful number, since it uses less digits than its factorization.

91495124506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45747562255.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 91495124506 in words is "ninety-one billion, four hundred ninety-five million, one hundred twenty-four thousand, five hundred six".