91713954497 has 8 divisors (see below), whose sum is σ = 104401656000. Its totient is φ = 79751264560.

The previous prime is 91713954461. The next prime is 91713954523. The reversal of 91713954497 is 79445931719.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91713954497 - 2⁶ = 91713954433 is a prime.

It is a super-2 number, since 2×91713954497² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91713954407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181252622 + ... + 181253127.

It is an arithmetic number, because the mean of its divisors is an integer number (13050207000).

Almost surely, 2^91713954497 is an apocalyptic number.

It is an amenable number.

91713954497 is a deficient number, since it is larger than the sum of its proper divisors (12687701503).

91713954497 is a wasteful number, since it uses less digits than its factorization.

91713954497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362505783.

The product of its digits is 8573040, while the sum is 59.

The spelling of 91713954497 in words is "ninety-one billion, seven hundred thirteen million, nine hundred fifty-four thousand, four hundred ninety-seven".