91917996747763 has 8 divisors (see below), whose sum is σ = 92018023612416. Its totient is φ = 91817984550600.

The previous prime is 91917996747757. The next prime is 91917996747769. The reversal of 91917996747763 is 36774769971919.

It is an interprime number because it is at equal distance from previous prime (91917996747757) and next prime (91917996747769).

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

It is a cyclic number.

It is not a de Polignac number, because 91917996747763 - 2⁹ = 91917996747251 is a prime.

It is a super-2 number, since 2×91917996747763² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91917996747769) 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, 8896920 + ... + 16217002.

It is an arithmetic number, because the mean of its divisors is an integer number (11502252951552).

Almost surely, 2^{91917996747763} is an apocalyptic number.

91917996747763 is a deficient number, since it is larger than the sum of its proper divisors (100026864653).

91917996747763 is a wasteful number, since it uses less digits than its factorization.

91917996747763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333745.

The product of its digits is 6805279152, while the sum is 85.

The spelling of 91917996747763 in words is "ninety-one trillion, nine hundred seventeen billion, nine hundred ninety-six million, seven hundred forty-seven thousand, seven hundred sixty-three".