851085624885 has 16 divisors (see below), whose sum is σ = 1364010364800. Its totient is φ = 453154544960.

The previous prime is 851085624871. The next prime is 851085624887. The reversal of 851085624885 is 588426580158.

It is not a de Polignac number, because 851085624885 - 2⁸ = 851085624629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851085624887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47352486 + ... + 47370455.

It is an arithmetic number, because the mean of its divisors is an integer number (85250647800).

Almost surely, 2^851085624885 is an apocalyptic number.

It is an amenable number.

851085624885 is a deficient number, since it is larger than the sum of its proper divisors (512924739915).

851085624885 is a wasteful number, since it uses less digits than its factorization.

851085624885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94723548.

The product of its (nonzero) digits is 24576000, while the sum is 60.

The spelling of 851085624885 in words is "eight hundred fifty-one billion, eighty-five million, six hundred twenty-four thousand, eight hundred eighty-five".