12422643402 has 64 divisors (see below), whose sum is σ = 27286680960. Its totient is φ = 3746974464.

The previous prime is 12422643391. The next prime is 12422643419. The reversal of 12422643402 is 20434622421.

It is a self number, because there is not a number n which added to its sum of digits gives 12422643402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1712928 + ... + 1720164.

It is an arithmetic number, because the mean of its divisors is an integer number (426354390).

Almost surely, 2^12422643402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12422643402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13643340480).

12422643402 is an abundant number, since it is smaller than the sum of its proper divisors (14864037558).

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

12422643402 is a wasteful number, since it uses less digits than its factorization.

12422643402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687.

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 12422643402 in words is "twelve billion, four hundred twenty-two million, six hundred forty-three thousand, four hundred two".