851922236880 has 1600 divisors, whose sum is σ = 3670421078016. Its totient is φ = 180278784000.

The previous prime is 851922236861. The next prime is 851922236897. The reversal of 851922236880 is 88632229158.

It is a happy number.

851922236880 is a `hidden beast` number, since 8 + 51 + 9 + 222 + 368 + 8 + 0 = 666.

It is a super-3 number, since 3×851922236880³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1350114165 + ... + 1350114795.

Almost surely, 2^851922236880 is an apocalyptic number.

851922236880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851922236880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1835210539008).

851922236880 is an abundant number, since it is smaller than the sum of its proper divisors (2818498841136).

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

851922236880 is a wasteful number, since it uses less digits than its factorization.

851922236880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 851922236880 in words is "eight hundred fifty-one billion, nine hundred twenty-two million, two hundred thirty-six thousand, eight hundred eighty".