91343308573440 has 3456 divisors, whose sum is σ = 425446205184000. Its totient is φ = 18526504550400.

The previous prime is 91343308573421. The next prime is 91343308573471. The reversal of 91343308573440 is 4437580334319.

91343308573440 is a `hidden beast` number, since 9 + 1 + 34 + 3 + 30 + 8 + 573 + 4 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3456).

It is a super-2 number, since 2×91343308573440² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 61676777500 + ... + 61676778980.

Almost surely, 2^{91343308573440} is an apocalyptic number.

91343308573440 is a gapful number since it is divisible by the number (90) 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 91343308573440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212723102592000).

91343308573440 is an abundant number, since it is smaller than the sum of its proper divisors (334102896610560).

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

91343308573440 is a wasteful number, since it uses less digits than its factorization.

91343308573440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 91343308573440 in words is "ninety-one trillion, three hundred forty-three billion, three hundred eight million, five hundred seventy-three thousand, four hundred forty".