91668418403 has 8 divisors (see below), whose sum is σ = 94833982656. Its totient is φ = 88547128000.

The previous prime is 91668418397. The next prime is 91668418409. The reversal of 91668418403 is 30481486619.

It is an interprime number because it is at equal distance from previous prime (91668418397) and next prime (91668418409).

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 91668418403 - 2⁶ = 91668418339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91668418409) 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, 11064251 + ... + 11072532.

It is an arithmetic number, because the mean of its divisors is an integer number (11854247832).

Almost surely, 2^91668418403 is an apocalyptic number.

91668418403 is a deficient number, since it is larger than the sum of its proper divisors (3165564253).

91668418403 is a wasteful number, since it uses less digits than its factorization.

91668418403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22136925.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 91668418403 in words is "ninety-one billion, six hundred sixty-eight million, four hundred eighteen thousand, four hundred three".