10840865399 has 24 divisors (see below), whose sum is σ = 13645397808. Its totient is φ = 8536631040.

The previous prime is 10840865383. The next prime is 10840865411. The reversal of 10840865399 is 99356804801.

It is not a de Polignac number, because 10840865399 - 2⁴ = 10840865383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10840865399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10840865369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94079 + ... + 174735.

It is an arithmetic number, because the mean of its divisors is an integer number (568558242).

Almost surely, 2^10840865399 is an apocalyptic number.

10840865399 is a deficient number, since it is larger than the sum of its proper divisors (2804532409).

10840865399 is a wasteful number, since it uses less digits than its factorization.

10840865399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80895 (or 80888 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 10840865399 in words is "ten billion, eight hundred forty million, eight hundred sixty-five thousand, three hundred ninety-nine".