12705798819 has 16 divisors (see below), whose sum is σ = 19369324800. Its totient is φ = 7257416160.

The previous prime is 12705798803. The next prime is 12705798821. The reversal of 12705798819 is 91889750721.

It is not a de Polignac number, because 12705798819 - 2⁴ = 12705798803 is a prime.

It is a super-2 number, since 2×12705798819² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12705798829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74844 + ... + 176105.

It is an arithmetic number, because the mean of its divisors is an integer number (1210582800).

Almost surely, 2^12705798819 is an apocalyptic number.

12705798819 is a deficient number, since it is larger than the sum of its proper divisors (6663525981).

12705798819 is a wasteful number, since it uses less digits than its factorization.

12705798819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253370.

The product of its (nonzero) digits is 2540160, while the sum is 57.

The spelling of 12705798819 in words is "twelve billion, seven hundred five million, seven hundred ninety-eight thousand, eight hundred nineteen".