91715281555492 has 144 divisors (see below), whose sum is σ = 203154855321600. Its totient is φ = 35986411702080.

The previous prime is 91715281555489. The next prime is 91715281555517. The reversal of 91715281555492 is 29455518251719.

91715281555492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82451763 + ... + 83556709.

It is an arithmetic number, because the mean of its divisors is an integer number (1410797606400).

Almost surely, 2^{91715281555492} 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 91715281555492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101577427660800).

91715281555492 is an abundant number, since it is smaller than the sum of its proper divisors (111439573766108).

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

91715281555492 is a wasteful number, since it uses less digits than its factorization.

91715281555492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105734 (or 1105725 counting only the distinct ones).

The product of its digits is 45360000, while the sum is 64.

The spelling of 91715281555492 in words is "ninety-one trillion, seven hundred fifteen billion, two hundred eighty-one million, five hundred fifty-five thousand, four hundred ninety-two".