91707516249 has 16 divisors (see below), whose sum is σ = 125721302784. Its totient is φ = 59427043200.

The previous prime is 91707516227. The next prime is 91707516253. The reversal of 91707516249 is 94261570719.

It is not a de Polignac number, because 91707516249 - 2⁵ = 91707516217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91707716249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342294 + ... + 1408959.

It is an arithmetic number, because the mean of its divisors is an integer number (7857581424).

Almost surely, 2^91707516249 is an apocalyptic number.

It is an amenable number.

91707516249 is a deficient number, since it is larger than the sum of its proper divisors (34013786535).

91707516249 is a wasteful number, since it uses less digits than its factorization.

91707516249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751568.

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 91707516249 in words is "ninety-one billion, seven hundred seven million, five hundred sixteen thousand, two hundred forty-nine".