91065622800000 has 768 divisors, whose sum is σ = 307861749336960. Its totient is φ = 23843635200000.

The previous prime is 91065622799971. The next prime is 91065622800037. The reversal of 91065622800000 is 822656019.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27094798320 + ... + 27094801680.

Almost surely, 2^{91065622800000} 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 91065622800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153930874668480).

91065622800000 is an abundant number, since it is smaller than the sum of its proper divisors (216796126536960).

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

91065622800000 is an equidigital number, since it uses as much as digits as its factorization.

91065622800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807 (or 3775 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 91065622800000 in words is "ninety-one trillion, sixty-five billion, six hundred twenty-two million, eight hundred thousand".