91490043459984 has 320 divisors, whose sum is σ = 271746463113216. Its totient is φ = 26274422587392.

The previous prime is 91490043459979. The next prime is 91490043460007. The reversal of 91490043459984 is 48995434009419.

It is a happy number.

It is a super-2 number, since 2×91490043459984² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3256207024 + ... + 3256235120.

Almost surely, 2^{91490043459984} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91490043459984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135873231556608).

91490043459984 is an abundant number, since it is smaller than the sum of its proper divisors (180256419653232).

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

91490043459984 is a wasteful number, since it uses less digits than its factorization.

91490043459984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30682 (or 30676 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 69.

The spelling of 91490043459984 in words is "ninety-one trillion, four hundred ninety billion, forty-three million, four hundred fifty-nine thousand, nine hundred eighty-four".