866143043871224 has 16 divisors (see below), whose sum is σ = 1856020808295600. Its totient is φ = 371204161659072.

The previous prime is 866143043871181. The next prime is 866143043871253. The reversal of 866143043871224 is 422178340341668.

It is a super-3 number, since 3×866143043871224³ (a number of 46 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7733420034509 + ... + 7733420034620.

It is an arithmetic number, because the mean of its divisors is an integer number (116001300518475).

Almost surely, 2^{866143043871224} is an apocalyptic number.

It is an amenable number.

866143043871224 is an abundant number, since it is smaller than the sum of its proper divisors (989877764424376).

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

866143043871224 is a wasteful number, since it uses less digits than its factorization.

866143043871224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466840069142 (or 15466840069138 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 59.

The spelling of 866143043871224 in words is "eight hundred sixty-six trillion, one hundred forty-three billion, forty-three million, eight hundred seventy-one thousand, two hundred twenty-four".