91521848850 has 24 divisors (see below), whose sum is σ = 226974185520. Its totient is φ = 24405826320.

The previous prime is 91521848807. The next prime is 91521848881. The reversal of 91521848850 is 5884812519.

It is a junction number, because it is equal to n+sod(n) for n = 91521848793 and 91521848802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305072680 + ... + 305072979.

It is an arithmetic number, because the mean of its divisors is an integer number (9457257730).

Almost surely, 2^91521848850 is an apocalyptic number.

91521848850 is an abundant number, since it is smaller than the sum of its proper divisors (135452336670).

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

91521848850 is a wasteful number, since it uses less digits than its factorization.

91521848850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610145674 (or 610145669 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 51.

The spelling of 91521848850 in words is "ninety-one billion, five hundred twenty-one million, eight hundred forty-eight thousand, eight hundred fifty".