91923393585408 has 1296 divisors, whose sum is σ = 323053501704192. Its totient is φ = 23104482508800.

The previous prime is 91923393585377. The next prime is 91923393585421. The reversal of 91923393585408 is 80458539332919.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23709926766 + ... + 23709930642.

Almost surely, 2^{91923393585408} is an apocalyptic number.

91923393585408 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91923393585408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161526750852096).

91923393585408 is an abundant number, since it is smaller than the sum of its proper divisors (231130108118784).

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

91923393585408 is a wasteful number, since it uses less digits than its factorization.

91923393585408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100 (or 4068 counting only the distinct ones).

The product of its (nonzero) digits is 251942400, while the sum is 69.

The spelling of 91923393585408 in words is "ninety-one trillion, nine hundred twenty-three billion, three hundred ninety-three million, five hundred eighty-five thousand, four hundred eight".