12760720543765 has 8 divisors (see below), whose sum is σ = 15312898238040. Its totient is φ = 10208554044672.

The previous prime is 12760720543751. The next prime is 12760720543799. The reversal of 12760720543765 is 56734502706721.

It can be written as a sum of positive squares in 4 ways, for example, as 1740504995524 + 11020215548241 = 1319282^2 + 3319671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12760720543765 is a prime.

It is a super-2 number, since 2×12760720543765² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44784 + ... + 5052073.

It is an arithmetic number, because the mean of its divisors is an integer number (1914112279755).

Almost surely, 2^{12760720543765} is an apocalyptic number.

It is an amenable number.

12760720543765 is a deficient number, since it is larger than the sum of its proper divisors (2552177694275).

12760720543765 is an equidigital number, since it uses as much as digits as its factorization.

12760720543765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597591.

The product of its (nonzero) digits is 14817600, while the sum is 55.

The spelling of 12760720543765 in words is "twelve trillion, seven hundred sixty billion, seven hundred twenty million, five hundred forty-three thousand, seven hundred sixty-five".