853803007321681 has 16 divisors (see below), whose sum is σ = 855726357133440. Its totient is φ = 851881705176960.

The previous prime is 853803007321577. The next prime is 853803007321703. The reversal of 853803007321681 is 186123700308358.

It is a cyclic number.

It is not a de Polignac number, because 853803007321681 - 2²⁷ = 853802873103953 is a prime.

It is a super-2 number, since 2×853803007321681² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853803007321181) 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, 7225211565 + ... + 7225329733.

It is an arithmetic number, because the mean of its divisors is an integer number (53482897320840).

Almost surely, 2^{853803007321681} is an apocalyptic number.

It is an amenable number.

853803007321681 is a deficient number, since it is larger than the sum of its proper divisors (1923349811759).

853803007321681 is a wasteful number, since it uses less digits than its factorization.

853803007321681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126696.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 853803007321681 in words is "eight hundred fifty-three trillion, eight hundred three billion, seven million, three hundred twenty-one thousand, six hundred eighty-one".