91402056022644 has 60 divisors (see below), whose sum is σ = 239009944273408. Its totient is φ = 30458819739600.

The previous prime is 91402056022577. The next prime is 91402056022721. The reversal of 91402056022644 is 44622065020419.

It is a happy number.

91402056022644 is a `hidden beast` number, since 9 + 1 + 4 + 0 + 2 + 0 + 560 + 22 + 64 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 91402056022644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38342452 + ... + 40656459.

Almost surely, 2^{91402056022644} is an apocalyptic number.

It is an amenable number.

91402056022644 is an abundant number, since it is smaller than the sum of its proper divisors (147607888250764).

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

91402056022644 is a wasteful number, since it uses less digits than its factorization.

91402056022644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79002498 (or 79002487 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 91402056022644 in words is "ninety-one trillion, four hundred two billion, fifty-six million, twenty-two thousand, six hundred forty-four".