863472520466181 has 48 divisors (see below), whose sum is σ = 1402863867662400. Its totient is φ = 508562677246464.

The previous prime is 863472520466159. The next prime is 863472520466189. The reversal of 863472520466181 is 181664025274368.

863472520466181 is a `hidden beast` number, since 8 + 6 + 3 + 4 + 7 + 2 + 5 + 2 + 0 + 4 + 6 + 618 + 1 = 666.

It is not a de Polignac number, because 863472520466181 - 2¹⁸ = 863472520204037 is a prime.

It is a super-2 number, since 2×863472520466181² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863472520466189) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1362216031 + ... + 1362849756.

It is an arithmetic number, because the mean of its divisors is an integer number (29226330576300).

Almost surely, 2^{863472520466181} is an apocalyptic number.

It is an amenable number.

863472520466181 is a deficient number, since it is larger than the sum of its proper divisors (539391347196219).

863472520466181 is a wasteful number, since it uses less digits than its factorization.

863472520466181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725065938 (or 2725065935 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 63.

The spelling of 863472520466181 in words is "eight hundred sixty-three trillion, four hundred seventy-two billion, five hundred twenty million, four hundred sixty-six thousand, one hundred eighty-one".