91828291912 has 32 divisors (see below), whose sum is σ = 196837502400. Its totient is φ = 39342464064.

The previous prime is 91828291901. The next prime is 91828291921. The reversal of 91828291912 is 21919282819.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91828291912.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82087 + ... + 436342.

It is an arithmetic number, because the mean of its divisors is an integer number (6151171950).

Almost surely, 2^91828291912 is an apocalyptic number.

It is an amenable number.

91828291912 is an abundant number, since it is smaller than the sum of its proper divisors (105009210488).

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

91828291912 is a wasteful number, since it uses less digits than its factorization.

91828291912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521605 (or 521601 counting only the distinct ones).

The product of its digits is 373248, while the sum is 52.

The spelling of 91828291912 in words is "ninety-one billion, eight hundred twenty-eight million, two hundred ninety-one thousand, nine hundred twelve".