91621235960160 has 384 divisors, whose sum is σ = 294812638848000. Its totient is φ = 23912757952512.

The previous prime is 91621235960143. The next prime is 91621235960161. The reversal of 91621235960160 is 6106953212619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91621235960161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18740278996 + ... + 18740283884.

It is an arithmetic number, because the mean of its divisors is an integer number (767741247000).

Almost surely, 2^{91621235960160} 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 91621235960160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147406319424000).

91621235960160 is an abundant number, since it is smaller than the sum of its proper divisors (203191402887840).

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

91621235960160 is a wasteful number, since it uses less digits than its factorization.

91621235960160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9358 (or 9350 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 91621235960160 in words is "ninety-one trillion, six hundred twenty-one billion, two hundred thirty-five million, nine hundred sixty thousand, one hundred sixty".