91422256645 has 8 divisors (see below), whose sum is σ = 111095400960. Its totient is φ = 72212010000.

The previous prime is 91422256633. The next prime is 91422256649. The reversal of 91422256645 is 54665222419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91422256645 - 2²⁹ = 90885385733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91422256595 and 91422256604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91422256649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115723981 + ... + 115724770.

It is an arithmetic number, because the mean of its divisors is an integer number (13886925120).

Almost surely, 2^91422256645 is an apocalyptic number.

It is an amenable number.

91422256645 is a deficient number, since it is larger than the sum of its proper divisors (19673144315).

91422256645 is a wasteful number, since it uses less digits than its factorization.

91422256645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231448835.

The product of its digits is 1036800, while the sum is 46.

The spelling of 91422256645 in words is "ninety-one billion, four hundred twenty-two million, two hundred fifty-six thousand, six hundred forty-five".