91273852320 has 288 divisors, whose sum is σ = 342614494656. Its totient is φ = 20353536000.

The previous prime is 91273852309. The next prime is 91273852331. The reversal of 91273852320 is 2325837219.

It is an interprime number because it is at equal distance from previous prime (91273852309) and next prime (91273852331).

It is a super-2 number, since 2×91273852320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 916995 + ... + 1011645.

It is an arithmetic number, because the mean of its divisors is an integer number (1189633662).

Almost surely, 2^91273852320 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 91273852320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171307247328).

91273852320 is an abundant number, since it is smaller than the sum of its proper divisors (251340642336).

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

91273852320 is a wasteful number, since it uses less digits than its factorization.

91273852320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94724 (or 94709 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 91273852320 in words is "ninety-one billion, two hundred seventy-three million, eight hundred fifty-two thousand, three hundred twenty".