91923393585406 has 8 divisors (see below), whose sum is σ = 143880094307664. Its totient is φ = 43963362149520.

The previous prime is 91923393585377. The next prime is 91923393585421. The reversal of 91923393585406 is 60458539332919.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999167321535 + ... + 999167321626.

It is an arithmetic number, because the mean of its divisors is an integer number (17985011788458).

Almost surely, 2^{91923393585406} is an apocalyptic number.

91923393585406 is a deficient number, since it is larger than the sum of its proper divisors (51956700722258).

91923393585406 is a wasteful number, since it uses less digits than its factorization.

91923393585406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998334643186.

The product of its (nonzero) digits is 188956800, while the sum is 67.

The spelling of 91923393585406 in words is "ninety-one trillion, nine hundred twenty-three billion, three hundred ninety-three million, five hundred eighty-five thousand, four hundred six".