12444312154 has 8 divisors (see below), whose sum is σ = 19764495828. Its totient is φ = 5856146880.

The previous prime is 12444312131. The next prime is 12444312193. The reversal of 12444312154 is 45121344421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12248955625 + 195356529 = 110675^2 + 13977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183004557 + ... + 183004624.

Almost surely, 2^12444312154 is an apocalyptic number.

12444312154 is a deficient number, since it is larger than the sum of its proper divisors (7320183674).

12444312154 is a wasteful number, since it uses less digits than its factorization.

12444312154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366009200.

The product of its digits is 15360, while the sum is 31.

Adding to 12444312154 its reverse (45121344421), we get a palindrome (57565656575).

The spelling of 12444312154 in words is "twelve billion, four hundred forty-four million, three hundred twelve thousand, one hundred fifty-four".