851783021088 has 48 divisors (see below), whose sum is σ = 2308057226496. Its totient is φ = 274768715520.

The previous prime is 851783021087. The next prime is 851783021153. The reversal of 851783021088 is 880120387158.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 851783021088.

It is not an unprimeable number, because it can be changed into a prime (851783021083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143105731 + ... + 143111682.

It is an arithmetic number, because the mean of its divisors is an integer number (48084525552).

Almost surely, 2^851783021088 is an apocalyptic number.

It is an amenable number.

851783021088 is an abundant number, since it is smaller than the sum of its proper divisors (1456274205408).

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

851783021088 is a wasteful number, since it uses less digits than its factorization.

851783021088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286217457 (or 286217449 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 51.

The spelling of 851783021088 in words is "eight hundred fifty-one billion, seven hundred eighty-three million, twenty-one thousand, eighty-eight".