Search a number
BaseRepresentation
bin10111001011011111…
…10001110110010001
31012010021102011011022
423211233301312101
5200441234121001
65414503325225
7620246004005
oct134557616621
935107364138
1012444442001
115306621512
1224b3750815
131234266764
14860a70705
154cc7b211b
hex2e5bf1d91

12444442001 has 4 divisors (see below), whose sum is σ = 12619715904. Its totient is φ = 12269168100.

The previous prime is 12444441979. The next prime is 12444442033. The reversal of 12444442001 is 10024444421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12444442001 - 26 = 12444441937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12444442301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87636845 + ... + 87636986.

It is an arithmetic number, because the mean of its divisors is an integer number (3154928976).

Almost surely, 212444442001 is an apocalyptic number.

It is an amenable number.

12444442001 is a deficient number, since it is larger than the sum of its proper divisors (175273903).

12444442001 is an equidigital number, since it uses as much as digits as its factorization.

12444442001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175273902.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 12444442001 its reverse (10024444421), we get a palindrome (22468886422).

The spelling of 12444442001 in words is "twelve billion, four hundred forty-four million, four hundred forty-two thousand, one".

Divisors: 1 71 175273831 12444442001