12403361251 has 16 divisors (see below), whose sum is σ = 12688473600. Its totient is φ = 12121149600.

The previous prime is 12403361239. The next prime is 12403361261. The reversal of 12403361251 is 15216330421.

12403361251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12403361251 is a nontrivial binomial coefficient, being equal to C(157502, 2).

It is a cyclic number.

It is not a de Polignac number, because 12403361251 - 2²³ = 12394972643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12403361261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9606916 + ... + 9608206.

It is an arithmetic number, because the mean of its divisors is an integer number (793029600).

Almost surely, 2^12403361251 is an apocalyptic number.

12403361251 is the 157501-st triangular number and also the 78751-st hexagonal number.

12403361251 is the 52501-st centered nonagonal number.

12403361251 is a deficient number, since it is larger than the sum of its proper divisors (285112349).

12403361251 is a wasteful number, since it uses less digits than its factorization.

12403361251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 12403361251 its reverse (15216330421), we get a palindrome (27619691672).

The spelling of 12403361251 in words is "twelve billion, four hundred three million, three hundred sixty-one thousand, two hundred fifty-one".