12405131516 has 6 divisors (see below), whose sum is σ = 21708980160. Its totient is φ = 6202565756.

The previous prime is 12405131513. The next prime is 12405131551. The reversal of 12405131516 is 61513150421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405131513) by changing a digit.

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, 1550641436 + ... + 1550641443.

It is an arithmetic number, because the mean of its divisors is an integer number (3618163360).

Almost surely, 2^12405131516 is an apocalyptic number.

It is an amenable number.

12405131516 is a deficient number, since it is larger than the sum of its proper divisors (9303848644).

12405131516 is a wasteful number, since it uses less digits than its factorization.

12405131516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101282883 (or 3101282881 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 12405131516 its reverse (61513150421), we get a palindrome (73918281937).

The spelling of 12405131516 in words is "twelve billion, four hundred five million, one hundred thirty-one thousand, five hundred sixteen".