866531161952 has 24 divisors (see below), whose sum is σ = 1706387848200. Its totient is φ = 433162819584.

The previous prime is 866531161843. The next prime is 866531161987. The reversal of 866531161952 is 259161135668.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 866531161894 and 866531161903.

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, 3074177 + ... + 3344192.

It is an arithmetic number, because the mean of its divisors is an integer number (71099493675).

Almost surely, 2^866531161952 is an apocalyptic number.

It is an amenable number.

866531161952 is a deficient number, since it is larger than the sum of its proper divisors (839856686248).

866531161952 is a wasteful number, since it uses less digits than its factorization.

866531161952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422598 (or 6422590 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The spelling of 866531161952 in words is "eight hundred sixty-six billion, five hundred thirty-one million, one hundred sixty-one thousand, nine hundred fifty-two".