91944896623 has 8 divisors (see below), whose sum is σ = 96020978688. Its totient is φ = 87875354424.

The previous prime is 91944896621. The next prime is 91944896639. The reversal of 91944896623 is 32669844919.

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

It is a cyclic number.

It is not a de Polignac number, because 91944896623 - 2¹ = 91944896621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91944896621) 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, 1606215 + ... + 1662472.

It is an arithmetic number, because the mean of its divisors is an integer number (12002622336).

Almost surely, 2^91944896623 is an apocalyptic number.

91944896623 is a deficient number, since it is larger than the sum of its proper divisors (4076082065).

91944896623 is a wasteful number, since it uses less digits than its factorization.

91944896623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269933.

The product of its digits is 20155392, while the sum is 61.

The spelling of 91944896623 in words is "ninety-one billion, nine hundred forty-four million, eight hundred ninety-six thousand, six hundred twenty-three".