91963133944 has 32 divisors (see below), whose sum is σ = 196284954240. Its totient is φ = 39983970400.

The previous prime is 91963133891. The next prime is 91963133987. The reversal of 91963133944 is 44933136919.

It is a super-3 number, since 3×91963133944³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91963133891 and 91963133900.

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, 22716142 + ... + 22720189.

It is an arithmetic number, because the mean of its divisors is an integer number (6133904820).

Almost surely, 2^91963133944 is an apocalyptic number.

It is an amenable number.

91963133944 is an abundant number, since it is smaller than the sum of its proper divisors (104321820296).

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

91963133944 is a wasteful number, since it uses less digits than its factorization.

91963133944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45436371 (or 45436367 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 52.

The spelling of 91963133944 in words is "ninety-one billion, nine hundred sixty-three million, one hundred thirty-three thousand, nine hundred forty-four".