12434421682 has 4 divisors (see below), whose sum is σ = 18651632526. Its totient is φ = 6217210840.

The previous prime is 12434421677. The next prime is 12434421709. The reversal of 12434421682 is 28612443421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28612443421 = 25219 ⋅1134559.

It can be written as a sum of positive squares in only one way, i.e., 10683082881 + 1751338801 = 103359^2 + 41849^2 .

It is a super-2 number, since 2×12434421682² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3108605419 + ... + 3108605422.

Almost surely, 2^12434421682 is an apocalyptic number.

12434421682 is a deficient number, since it is larger than the sum of its proper divisors (6217210844).

12434421682 is an equidigital number, since it uses as much as digits as its factorization.

12434421682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217210843.

The product of its digits is 73728, while the sum is 37.

The spelling of 12434421682 in words is "twelve billion, four hundred thirty-four million, four hundred twenty-one thousand, six hundred eighty-two".