12859284146 has 4 divisors (see below), whose sum is σ = 19288926222. Its totient is φ = 6429642072.

The previous prime is 12859284079. The next prime is 12859284149. The reversal of 12859284146 is 64148295821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12213565225 + 645718921 = 110515^2 + 25411^2 .

It is a super-2 number, since 2×12859284146² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12859284094 and 12859284103.

It is not an unprimeable number, because it can be changed into a prime (12859284149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214821035 + ... + 3214821038.

Almost surely, 2^12859284146 is an apocalyptic number.

12859284146 is a deficient number, since it is larger than the sum of its proper divisors (6429642076).

12859284146 is an equidigital number, since it uses as much as digits as its factorization.

12859284146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429642075.

The product of its digits is 1105920, while the sum is 50.

The spelling of 12859284146 in words is "twelve billion, eight hundred fifty-nine million, two hundred eighty-four thousand, one hundred forty-six".