851081628630 has 32 divisors (see below), whose sum is σ = 2054007072000. Its totient is φ = 225687193952.

The previous prime is 851081628583. The next prime is 851081628637. The reversal of 851081628630 is 36826180158.

It is a self number, because there is not a number n which added to its sum of digits gives 851081628630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851081628637) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 79238730 + ... + 79249469.

It is an arithmetic number, because the mean of its divisors is an integer number (64187721000).

Almost surely, 2^851081628630 is an apocalyptic number.

851081628630 is an abundant number, since it is smaller than the sum of its proper divisors (1202925443370).

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

851081628630 is a wasteful number, since it uses less digits than its factorization.

851081628630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158488388.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 851081628630 in words is "eight hundred fifty-one billion, eighty-one million, six hundred twenty-eight thousand, six hundred thirty".