91426223180 has 12 divisors (see below), whose sum is σ = 191995068720. Its totient is φ = 36570489264.

The previous prime is 91426223171. The next prime is 91426223183. The reversal of 91426223180 is 8132262419.

It is not an unprimeable number, because it can be changed into a prime (91426223183) 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, 2285655560 + ... + 2285655599.

It is an arithmetic number, because the mean of its divisors is an integer number (15999589060).

Almost surely, 2^91426223180 is an apocalyptic number.

It is an amenable number.

91426223180 is an abundant number, since it is smaller than the sum of its proper divisors (100568845540).

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

91426223180 is a wasteful number, since it uses less digits than its factorization.

91426223180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571311168 (or 4571311166 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

Adding to 91426223180 its reverse (8132262419), we get a palindrome (99558485599).

The spelling of 91426223180 in words is "ninety-one billion, four hundred twenty-six million, two hundred twenty-three thousand, one hundred eighty".