91916291338080 has 384 divisors, whose sum is σ = 340955960325120. Its totient is φ = 20578958991360.

The previous prime is 91916291338013. The next prime is 91916291338087. The reversal of 91916291338080 is 8083319261919.

It is a super-2 number, since 2×91916291338080² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91916291338087) 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, 9528007 + ... + 16571526.

It is an arithmetic number, because the mean of its divisors is an integer number (887906146680).

Almost surely, 2^{91916291338080} is an apocalyptic number.

It is an amenable number.

91916291338080 is an abundant number, since it is smaller than the sum of its proper divisors (249039668987040).

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

91916291338080 is a wasteful number, since it uses less digits than its factorization.

91916291338080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26099614 (or 26099606 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 60.

The spelling of 91916291338080 in words is "ninety-one trillion, nine hundred sixteen billion, two hundred ninety-one million, three hundred thirty-eight thousand, eighty".