91414031663 has 4 divisors (see below), whose sum is σ = 92912622408. Its totient is φ = 89915440920.

The previous prime is 91414031651. The next prime is 91414031671. The reversal of 91414031663 is 36613041419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36613041419 = 31091 ⋅1177609.

It is a cyclic number.

It is not a de Polignac number, because 91414031663 - 2¹² = 91414027567 is a prime.

It is a super-3 number, since 3×91414031663³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91414031363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749295281 + ... + 749295402.

It is an arithmetic number, because the mean of its divisors is an integer number (23228155602).

Almost surely, 2^91414031663 is an apocalyptic number.

91414031663 is a deficient number, since it is larger than the sum of its proper divisors (1498590745).

91414031663 is a wasteful number, since it uses less digits than its factorization.

91414031663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498590744.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 91414031663 in words is "ninety-one billion, four hundred fourteen million, thirty-one thousand, six hundred sixty-three".