851886914039 has 4 divisors (see below), whose sum is σ = 973585044624. Its totient is φ = 730188783456.

The previous prime is 851886913991. The next prime is 851886914057. The reversal of 851886914039 is 930419688158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 851886914039 - 2³² = 847591946743 is a prime.

It is a super-2 number, since 2×851886914039² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851886914089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60849065282 + ... + 60849065295.

It is an arithmetic number, because the mean of its divisors is an integer number (243396261156).

Almost surely, 2^851886914039 is an apocalyptic number.

851886914039 is a deficient number, since it is larger than the sum of its proper divisors (121698130585).

851886914039 is a wasteful number, since it uses less digits than its factorization.

851886914039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121698130584.

The product of its (nonzero) digits is 14929920, while the sum is 62.

The spelling of 851886914039 in words is "eight hundred fifty-one billion, eight hundred eighty-six million, nine hundred fourteen thousand, thirty-nine".