12289504794581 has 16 divisors (see below), whose sum is σ = 14192013770880. Its totient is φ = 10423957780800.

The previous prime is 12289504794577. The next prime is 12289504794607. The reversal of 12289504794581 is 18549740598221.

It is a cyclic number.

It is not a de Polignac number, because 12289504794581 - 2² = 12289504794577 is a prime.

It is a super-2 number, since 2×12289504794581² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289504734581) 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, 9632570 + ... + 10833531.

It is an arithmetic number, because the mean of its divisors is an integer number (887000860680).

Almost surely, 2^{12289504794581} is an apocalyptic number.

It is an amenable number.

12289504794581 is a deficient number, since it is larger than the sum of its proper divisors (1902508976299).

12289504794581 is a wasteful number, since it uses less digits than its factorization.

12289504794581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20467004.

The product of its (nonzero) digits is 58060800, while the sum is 65.

The spelling of 12289504794581 in words is "twelve trillion, two hundred eighty-nine billion, five hundred four million, seven hundred ninety-four thousand, five hundred eighty-one".