91645077165600 has 288 divisors, whose sum is σ = 340980411856896. Its totient is φ = 20943715046400.

The previous prime is 91645077165571. The next prime is 91645077165611. The reversal of 91645077165600 is 656177054619.

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, 94386595 + ... + 95352605.

It is an arithmetic number, because the mean of its divisors is an integer number (1183959763392).

Almost surely, 2^{91645077165600} 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 91645077165600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170490205928448).

91645077165600 is an abundant number, since it is smaller than the sum of its proper divisors (249335334691296).

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

91645077165600 is a wasteful number, since it uses less digits than its factorization.

91645077165600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971688 (or 971675 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 57.

The spelling of 91645077165600 in words is "ninety-one trillion, six hundred forty-five billion, seventy-seven million, one hundred sixty-five thousand, six hundred".