863621512827102 has 12 divisors (see below), whose sum is σ = 1871179944458760. Its totient is φ = 287873837609028.

The previous prime is 863621512827041. The next prime is 863621512827113. The reversal of 863621512827102 is 201728215126368.

It is a happy number.

863621512827102 is a `hidden beast` number, since 8 + 6 + 3 + 621 + 5 + 1 + 2 + 8 + 2 + 7 + 1 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23989486467402 + ... + 23989486467437.

It is an arithmetic number, because the mean of its divisors is an integer number (155931662038230).

Almost surely, 2^{863621512827102} is an apocalyptic number.

863621512827102 is an abundant number, since it is smaller than the sum of its proper divisors (1007558431631658).

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

863621512827102 is a wasteful number, since it uses less digits than its factorization.

863621512827102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47978972934847 (or 47978972934844 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 863621512827102 in words is "eight hundred sixty-three trillion, six hundred twenty-one billion, five hundred twelve million, eight hundred twenty-seven thousand, one hundred two".