91043980963 has 8 divisors (see below), whose sum is σ = 98052155600. Its totient is φ = 84036490848.

The previous prime is 91043980927. The next prime is 91043980967. The reversal of 91043980963 is 36908934019.

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 91043980963 - 2⁹ = 91043980451 is a prime.

It is a super-2 number, since 2×91043980963² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91043980963.

It is not an unprimeable number, because it can be changed into a prime (91043980967) 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, 123973 + ... + 444361.

It is an arithmetic number, because the mean of its divisors is an integer number (12256519450).

Almost surely, 2^91043980963 is an apocalyptic number.

91043980963 is a deficient number, since it is larger than the sum of its proper divisors (7008174637).

91043980963 is a wasteful number, since it uses less digits than its factorization.

91043980963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342261.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 91043980963 in words is "ninety-one billion, forty-three million, nine hundred eighty thousand, nine hundred sixty-three".