10399187868 has 12 divisors (see below), whose sum is σ = 24264771720. Its totient is φ = 3466395952.

The previous prime is 10399187849. The next prime is 10399187941. The reversal of 10399187868 is 86878199301.

It is a tau number, because it is divible by the number of its divisors (12).

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, 433299483 + ... + 433299506.

It is an arithmetic number, because the mean of its divisors is an integer number (2022064310).

Almost surely, 2^10399187868 is an apocalyptic number.

It is an amenable number.

10399187868 is an abundant number, since it is smaller than the sum of its proper divisors (13865583852).

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

10399187868 is a wasteful number, since it uses less digits than its factorization.

10399187868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866598996 (or 866598994 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 10399187868 in words is "ten billion, three hundred ninety-nine million, one hundred eighty-seven thousand, eight hundred sixty-eight".