91855754250 has 256 divisors, whose sum is σ = 258364753920. Its totient is φ = 21585408000.

The previous prime is 91855754231. The next prime is 91855754279. The reversal of 91855754250 is 5245755819.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91855754193 and 91855754202.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18785806 + ... + 18790694.

It is an arithmetic number, because the mean of its divisors is an integer number (1009237320).

Almost surely, 2^91855754250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91855754250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129182376960).

91855754250 is an abundant number, since it is smaller than the sum of its proper divisors (166508999670).

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

91855754250 is a wasteful number, since it uses less digits than its factorization.

91855754250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 51.

The spelling of 91855754250 in words is "ninety-one billion, eight hundred fifty-five million, seven hundred fifty-four thousand, two hundred fifty".