12802444442 has 4 divisors (see below), whose sum is σ = 19203666666. Its totient is φ = 6401222220.

The previous prime is 12802444433. The next prime is 12802444453. The reversal of 12802444442 is 24444420821.

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., 12161898961 + 640545481 = 110281^2 + 25309^2 .

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 as a sum of consecutive naturals, namely, 3200611109 + ... + 3200611112.

Almost surely, 2^12802444442 is an apocalyptic number.

12802444442 is a deficient number, since it is larger than the sum of its proper divisors (6401222224).

12802444442 is an equidigital number, since it uses as much as digits as its factorization.

12802444442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401222223.

The product of its (nonzero) digits is 65536, while the sum is 35.

The spelling of 12802444442 in words is "twelve billion, eight hundred two million, four hundred forty-four thousand, four hundred forty-two".