12431660536 has 8 divisors (see below), whose sum is σ = 23309363520. Its totient is φ = 6215830264.

The previous prime is 12431660519. The next prime is 12431660539. The reversal of 12431660536 is 63506613421.

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

It is a junction number, because it is equal to n+sod(n) for n = 12431660495 and 12431660504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431660539) 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, 776978776 + ... + 776978791.

It is an arithmetic number, because the mean of its divisors is an integer number (2913670440).

Almost surely, 2^12431660536 is an apocalyptic number.

It is an amenable number.

12431660536 is a deficient number, since it is larger than the sum of its proper divisors (10877702984).

12431660536 is a wasteful number, since it uses less digits than its factorization.

12431660536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553957573 (or 1553957569 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 12431660536 in words is "twelve billion, four hundred thirty-one million, six hundred sixty thousand, five hundred thirty-six".