12504043461 has 16 divisors (see below), whose sum is σ = 20519456384. Its totient is φ = 6595539264.

The previous prime is 12504043457. The next prime is 12504043463. The reversal of 12504043461 is 16434040521.

It is not a de Polignac number, because 12504043461 - 2² = 12504043457 is a prime.

It is a super-2 number, since 2×12504043461² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504043463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22900906 + ... + 22901451.

It is an arithmetic number, because the mean of its divisors is an integer number (1282466024).

Almost surely, 2^12504043461 is an apocalyptic number.

It is an amenable number.

12504043461 is a deficient number, since it is larger than the sum of its proper divisors (8015412923).

12504043461 is a wasteful number, since it uses less digits than its factorization.

12504043461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45802380.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12504043461 its reverse (16434040521), we get a palindrome (28938083982).

The spelling of 12504043461 in words is "twelve billion, five hundred four million, forty-three thousand, four hundred sixty-one".