91669358426 has 16 divisors (see below), whose sum is σ = 138388433568. Its totient is φ = 45540046800.

The previous prime is 91669358423. The next prime is 91669358437. The reversal of 91669358426 is 62485396619.

It is not an unprimeable number, because it can be changed into a prime (91669358423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114661 + ... + 1194071.

It is an arithmetic number, because the mean of its divisors is an integer number (8649277098).

Almost surely, 2^91669358426 is an apocalyptic number.

91669358426 is a deficient number, since it is larger than the sum of its proper divisors (46719075142).

91669358426 is a wasteful number, since it uses less digits than its factorization.

91669358426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83117.

The product of its digits is 16796160, while the sum is 59.

The spelling of 91669358426 in words is "ninety-one billion, six hundred sixty-nine million, three hundred fifty-eight thousand, four hundred twenty-six".