91715241252 has 12 divisors (see below), whose sum is σ = 214002229616. Its totient is φ = 30571747080.

The previous prime is 91715241173. The next prime is 91715241263. The reversal of 91715241252 is 25214251719.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 91715241252.

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 3 ways as a sum of consecutive naturals, for example, 3821468374 + ... + 3821468397.

Almost surely, 2^91715241252 is an apocalyptic number.

It is an amenable number.

91715241252 is an abundant number, since it is smaller than the sum of its proper divisors (122286988364).

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

91715241252 is a wasteful number, since it uses less digits than its factorization.

91715241252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642936778 (or 7642936776 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The spelling of 91715241252 in words is "ninety-one billion, seven hundred fifteen million, two hundred forty-one thousand, two hundred fifty-two".