12400303144 has 8 divisors (see below), whose sum is σ = 23250568410. Its totient is φ = 6200151568.

The previous prime is 12400303129. The next prime is 12400303159. The reversal of 12400303144 is 44130300421.

It is an interprime number because it is at equal distance from previous prime (12400303129) and next prime (12400303159).

It can be written as a sum of positive squares in only one way, i.e., 7452868900 + 4947434244 = 86330^2 + 70338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775018939 + ... + 775018954.

Almost surely, 2^12400303144 is an apocalyptic number.

It is an amenable number.

12400303144 is a deficient number, since it is larger than the sum of its proper divisors (10850265266).

12400303144 is a wasteful number, since it uses less digits than its factorization.

12400303144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550037899 (or 1550037895 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12400303144 its reverse (44130300421), we get a palindrome (56530603565).

The spelling of 12400303144 in words is "twelve billion, four hundred million, three hundred three thousand, one hundred forty-four".