851290471787280 has 640 divisors, whose sum is σ = 3122436673929216. Its totient is φ = 187751507558400.

The previous prime is 851290471787237. The next prime is 851290471787281. The reversal of 851290471787280 is 82787174092158.

It is not an unprimeable number, because it can be changed into a prime (851290471787281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25632769875 + ... + 25632803085.

Almost surely, 2^{851290471787280} is an apocalyptic number.

851290471787280 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 851290471787280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561218336964608).

851290471787280 is an abundant number, since it is smaller than the sum of its proper divisors (2271146202141936).

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

851290471787280 is a wasteful number, since it uses less digits than its factorization.

851290471787280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34695 (or 34689 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 69.

The spelling of 851290471787280 in words is "eight hundred fifty-one trillion, two hundred ninety billion, four hundred seventy-one million, seven hundred eighty-seven thousand, two hundred eighty".