851606313744 has 20 divisors (see below), whose sum is σ = 2199982977296. Its totient is φ = 283868771232.

The previous prime is 851606313721. The next prime is 851606313769. The reversal of 851606313744 is 447313606158.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 17741798203 = 851606313744 / (8 + 5 + 1 + 6 + 0 + 6 + 3 + 1 + 3 + 7 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 851606313693 and 851606313702.

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 3 ways as a sum of consecutive naturals, for example, 8870899054 + ... + 8870899149.

Almost surely, 2^851606313744 is an apocalyptic number.

It is an amenable number.

851606313744 is an abundant number, since it is smaller than the sum of its proper divisors (1348376663552).

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

851606313744 is a wasteful number, since it uses less digits than its factorization.

851606313744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17741798214 (or 17741798208 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 851606313744 in words is "eight hundred fifty-one billion, six hundred six million, three hundred thirteen thousand, seven hundred forty-four".