810401841663860 has 48 divisors (see below), whose sum is σ = 1727273149625856. Its totient is φ = 319317224257152.

The previous prime is 810401841663721. The next prime is 810401841663877. The reversal of 810401841663860 is 68366148104018.

It is a super-2 number, since 2×810401841663860² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 810401841663796 and 810401841663805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76360574 + ... + 86323466.

It is an arithmetic number, because the mean of its divisors is an integer number (35984857283872).

Almost surely, 2^{810401841663860} is an apocalyptic number.

It is an amenable number.

810401841663860 is an abundant number, since it is smaller than the sum of its proper divisors (916871307961996).

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

810401841663860 is a wasteful number, since it uses less digits than its factorization.

810401841663860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10023672 (or 10023670 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 56.

Adding to 810401841663860 its reverse (68366148104018), we get a palindrome (878767989767878).

The spelling of 810401841663860 in words is "eight hundred ten trillion, four hundred one billion, eight hundred forty-one million, six hundred sixty-three thousand, eight hundred sixty".