91829054091940 has 48 divisors (see below), whose sum is σ = 211977908138304. Its totient is φ = 33137479606400.

The previous prime is 91829054091937. The next prime is 91829054092031. The reversal of 91829054091940 is 4919045092819.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593119239 + ... + 1593176878.

It is an arithmetic number, because the mean of its divisors is an integer number (4416206419548).

Almost surely, 2^{91829054091940} is an apocalyptic number.

It is an amenable number.

91829054091940 is an abundant number, since it is smaller than the sum of its proper divisors (120148854046364).

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

91829054091940 is a wasteful number, since it uses less digits than its factorization.

91829054091940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186296268 (or 3186296266 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 61.

The spelling of 91829054091940 in words is "ninety-one trillion, eight hundred twenty-nine billion, fifty-four million, ninety-one thousand, nine hundred forty".