91337319863680 has 1024 divisors, whose sum is σ = 264343602124800. Its totient is φ = 29820439756800.

The previous prime is 91337319863677. The next prime is 91337319863743. The reversal of 91337319863680 is 8636891373319.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 48661330902 + ... + 48661332778.

It is an arithmetic number, because the mean of its divisors is an integer number (258148048950).

Almost surely, 2^{91337319863680} 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 91337319863680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132171801062400).

91337319863680 is an abundant number, since it is smaller than the sum of its proper divisors (173006282261120).

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

91337319863680 is a wasteful number, since it uses less digits than its factorization.

91337319863680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 67.

The spelling of 91337319863680 in words is "ninety-one trillion, three hundred thirty-seven billion, three hundred nineteen million, eight hundred sixty-three thousand, six hundred eighty".