12594815641 has 4 divisors (see below), whose sum is σ = 12782798032. Its totient is φ = 12406833252.

The previous prime is 12594815621. The next prime is 12594815659. The reversal of 12594815641 is 14651849521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12594815641 - 2¹⁵ = 12594782873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12594815591 and 12594815600.

It is not an unprimeable number, because it can be changed into a prime (12594815621) 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 in 3 ways as a sum of consecutive naturals, for example, 93991095 + ... + 93991228.

It is an arithmetic number, because the mean of its divisors is an integer number (3195699508).

Almost surely, 2^12594815641 is an apocalyptic number.

It is an amenable number.

12594815641 is a deficient number, since it is larger than the sum of its proper divisors (187982391).

12594815641 is an equidigital number, since it uses as much as digits as its factorization.

12594815641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187982390.

The product of its digits is 345600, while the sum is 46.

The spelling of 12594815641 in words is "twelve billion, five hundred ninety-four million, eight hundred fifteen thousand, six hundred forty-one".