851336880 has 320 divisors, whose sum is σ = 2962096128. Its totient is φ = 201277440.

The previous prime is 851336869. The next prime is 851336891. The reversal of 851336880 is 88633158.

It is an interprime number because it is at equal distance from previous prime (851336869) and next prime (851336891).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6703377 + ... + 6703503.

Almost surely, 2^851336880 is an apocalyptic number.

851336880 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 851336880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481048064).

851336880 is an abundant number, since it is smaller than the sum of its proper divisors (2110759248).

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

851336880 is a wasteful number, since it uses less digits than its factorization.

851336880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 851336880 is about 29177.6777691440. The cubic root of 851336880 is about 947.7645982124.

The spelling of 851336880 in words is "eight hundred fifty-one million, three hundred thirty-six thousand, eight hundred eighty".