12565043463 has 32 divisors (see below), whose sum is σ = 20191651840. Its totient is φ = 6789575520.

The previous prime is 12565043431. The next prime is 12565043479. The reversal of 12565043463 is 36434056521.

It is not a de Polignac number, because 12565043463 - 2⁵ = 12565043431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565043483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189468 + ... + 247038.

It is an arithmetic number, because the mean of its divisors is an integer number (630989120).

Almost surely, 2^12565043463 is an apocalyptic number.

12565043463 is a deficient number, since it is larger than the sum of its proper divisors (7626608377).

12565043463 is a wasteful number, since it uses less digits than its factorization.

12565043463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58147.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 12565043463 its reverse (36434056521), we get a palindrome (48999099984).

The spelling of 12565043463 in words is "twelve billion, five hundred sixty-five million, forty-three thousand, four hundred sixty-three".