12592717421 has 16 divisors (see below), whose sum is σ = 13203122688. Its totient is φ = 11996140800.

The previous prime is 12592717393. The next prime is 12592717433. The reversal of 12592717421 is 12471729521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12592717421 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 (12592717441) 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, 714305 + ... + 731721.

It is an arithmetic number, because the mean of its divisors is an integer number (825195168).

Almost surely, 2^12592717421 is an apocalyptic number.

It is an amenable number.

12592717421 is a deficient number, since it is larger than the sum of its proper divisors (610405267).

12592717421 is a wasteful number, since it uses less digits than its factorization.

12592717421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17812.

The product of its digits is 70560, while the sum is 41.

The spelling of 12592717421 in words is "twelve billion, five hundred ninety-two million, seven hundred seventeen thousand, four hundred twenty-one".