91481021926 has 8 divisors (see below), whose sum is σ = 156824609040. Its totient is φ = 39206152248.

The previous prime is 91481021923. The next prime is 91481021927. The reversal of 91481021926 is 62912018419.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91481021923) 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, 3267179341 + ... + 3267179368.

It is an arithmetic number, because the mean of its divisors is an integer number (19603076130).

Almost surely, 2^91481021926 is an apocalyptic number.

91481021926 is a deficient number, since it is larger than the sum of its proper divisors (65343587114).

91481021926 is a wasteful number, since it uses less digits than its factorization.

91481021926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534358718.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 91481021926 in words is "ninety-one billion, four hundred eighty-one million, twenty-one thousand, nine hundred twenty-six".