866286508408 has 8 divisors (see below), whose sum is σ = 1624287203280. Its totient is φ = 433143254200.

The previous prime is 866286508403. The next prime is 866286508429. The reversal of 866286508408 is 804805682668.

It is a happy number.

866286508408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866286508403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54142906768 + ... + 54142906783.

It is an arithmetic number, because the mean of its divisors is an integer number (203035900410).

Almost surely, 2^866286508408 is an apocalyptic number.

It is an amenable number.

866286508408 is a deficient number, since it is larger than the sum of its proper divisors (758000694872).

866286508408 is a wasteful number, since it uses less digits than its factorization.

866286508408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108285813557 (or 108285813553 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 61.

The spelling of 866286508408 in words is "eight hundred sixty-six billion, two hundred eighty-six million, five hundred eight thousand, four hundred eight".