91426404406 has 8 divisors (see below), whose sum is σ = 137200537224. Its totient is φ = 45692892000.

The previous prime is 91426404397. The next prime is 91426404469. The reversal of 91426404406 is 60440462419.

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, 10149475 + ... + 10158478.

It is an arithmetic number, because the mean of its divisors is an integer number (17150067153).

Almost surely, 2^91426404406 is an apocalyptic number.

91426404406 is a deficient number, since it is larger than the sum of its proper divisors (45774132818).

91426404406 is a wasteful number, since it uses less digits than its factorization.

91426404406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20310206.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 91426404406 in words is "ninety-one billion, four hundred twenty-six million, four hundred four thousand, four hundred six".