851396120624 has 20 divisors (see below), whose sum is σ = 1885234267344. Its totient is φ = 364884051648.

The previous prime is 851396120623. The next prime is 851396120753. The reversal of 851396120624 is 426021693158.

It is not an unprimeable number, because it can be changed into a prime (851396120623) by changing a digit.

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, 3800875427 + ... + 3800875650.

Almost surely, 2^851396120624 is an apocalyptic number.

It is an amenable number.

851396120624 is an abundant number, since it is smaller than the sum of its proper divisors (1033838146720).

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

851396120624 is a wasteful number, since it uses less digits than its factorization.

851396120624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7601751092 (or 7601751086 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 851396120624 in words is "eight hundred fifty-one billion, three hundred ninety-six million, one hundred twenty thousand, six hundred twenty-four".