91923393585407 has 4 divisors (see below), whose sum is σ = 91923446663256. Its totient is φ = 91923340507560.

The previous prime is 91923393585377. The next prime is 91923393585421. The reversal of 91923393585407 is 70458539332919.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91923393585407 - 2²⁰ = 91923392536831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91923393585007) 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, 23850344 + ... + 27435117.

It is an arithmetic number, because the mean of its divisors is an integer number (22980861665814).

Almost surely, 2^{91923393585407} is an apocalyptic number.

91923393585407 is a deficient number, since it is larger than the sum of its proper divisors (53077849).

91923393585407 is a wasteful number, since it uses less digits than its factorization.

91923393585407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53077848.

The product of its (nonzero) digits is 220449600, while the sum is 68.

The spelling of 91923393585407 in words is "ninety-one trillion, nine hundred twenty-three billion, three hundred ninety-three million, five hundred eighty-five thousand, four hundred seven".