91828291920 has 80 divisors (see below), whose sum is σ = 284834394432. Its totient is φ = 24473205760.

The previous prime is 91828291901. The next prime is 91828291921. The reversal of 91828291920 is 2919282819.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91828291921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301879 + ... + 524201.

Almost surely, 2^91828291920 is an apocalyptic number.

It is an amenable number.

91828291920 is an abundant number, since it is smaller than the sum of its proper divisors (193006102512).

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

91828291920 is a wasteful number, since it uses less digits than its factorization.

91828291920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224060 (or 224054 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 51.

The spelling of 91828291920 in words is "ninety-one billion, eight hundred twenty-eight million, two hundred ninety-one thousand, nine hundred twenty".