851885543055 has 16 divisors (see below), whose sum is σ = 1366944879744. Its totient is φ = 453029619360.

The previous prime is 851885543039. The next prime is 851885543059. The reversal of 851885543055 is 550345588158.

It is not a de Polignac number, because 851885543055 - 2⁴ = 851885543039 is a prime.

It is a super-2 number, since 2×851885543055² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 851885542986 and 851885543004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851885543059) 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, 81828181 + ... + 81838590.

It is an arithmetic number, because the mean of its divisors is an integer number (85434054984).

Almost surely, 2^851885543055 is an apocalyptic number.

851885543055 is a deficient number, since it is larger than the sum of its proper divisors (515059336689).

851885543055 is a wasteful number, since it uses less digits than its factorization.

851885543055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163667126.

The product of its (nonzero) digits is 19200000, while the sum is 57.

The spelling of 851885543055 in words is "eight hundred fifty-one billion, eight hundred eighty-five million, five hundred forty-three thousand, fifty-five".