91422490505 has 16 divisors (see below), whose sum is σ = 110739182400. Its totient is φ = 72450175680.

The previous prime is 91422490499. The next prime is 91422490541. The reversal of 91422490505 is 50509422419.

It is not a de Polignac number, because 91422490505 - 2⁶ = 91422490441 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2670386 + ... + 2704404.

It is an arithmetic number, because the mean of its divisors is an integer number (6921198900).

Almost surely, 2^91422490505 is an apocalyptic number.

It is an amenable number.

91422490505 is a deficient number, since it is larger than the sum of its proper divisors (19316691895).

91422490505 is a wasteful number, since it uses less digits than its factorization.

91422490505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39064.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 91422490505 in words is "ninety-one billion, four hundred twenty-two million, four hundred ninety thousand, five hundred five".