91422741440 has 56 divisors (see below), whose sum is σ = 230506322832. Its totient is φ = 34417971200.

The previous prime is 91422741413. The next prime is 91422741499. The reversal of 91422741440 is 4414722419.

It is a junction number, because it is equal to n+sod(n) for n = 91422741394 and 91422741403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8397386 + ... + 8408265.

Almost surely, 2^91422741440 is an apocalyptic number.

It is an amenable number.

91422741440 is an abundant number, since it is smaller than the sum of its proper divisors (139083581392).

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

91422741440 is a wasteful number, since it uses less digits than its factorization.

91422741440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16805685 (or 16805675 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 91422741440 in words is "ninety-one billion, four hundred twenty-two million, seven hundred forty-one thousand, four hundred forty".