91622577426 has 96 divisors (see below), whose sum is σ = 198601326144. Its totient is φ = 28080691200.

The previous prime is 91622577421. The next prime is 91622577479. The reversal of 91622577426 is 62477522619.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (91622577421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61864606 + ... + 61866086.

It is an arithmetic number, because the mean of its divisors is an integer number (2068763814).

Almost surely, 2^91622577426 is an apocalyptic number.

91622577426 is an abundant number, since it is smaller than the sum of its proper divisors (106978748718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91622577426 is a wasteful number, since it uses less digits than its factorization.

91622577426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1727 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 51.

The spelling of 91622577426 in words is "ninety-one billion, six hundred twenty-two million, five hundred seventy-seven thousand, four hundred twenty-six".