91422869646 has 8 divisors (see below), whose sum is σ = 182845739304. Its totient is φ = 30474289880.

The previous prime is 91422869609. The next prime is 91422869647. The reversal of 91422869646 is 64696822419.

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

91422869646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91422869647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7618572465 + ... + 7618572476.

It is an arithmetic number, because the mean of its divisors is an integer number (22855717413).

Almost surely, 2^91422869646 is an apocalyptic number.

91422869646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91422869646 is a wasteful number, since it uses less digits than its factorization.

91422869646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237144946.

The product of its digits is 8957952, while the sum is 57.

The spelling of 91422869646 in words is "ninety-one billion, four hundred twenty-two million, eight hundred sixty-nine thousand, six hundred forty-six".