12758832510505 has 8 divisors (see below), whose sum is σ = 15310624115592. Its totient is φ = 10207049273088.

The previous prime is 12758832510503. The next prime is 12758832510527. The reversal of 12758832510505 is 50501523885721.

It can be written as a sum of positive squares in 4 ways, for example, as 145140426729 + 12613692083776 = 380973^2 + 3551576^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12758832510505 - 2¹ = 12758832510503 is a prime.

It is a super-2 number, since 2×12758832510505² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12758832510503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984867 + ... + 5427463.

It is an arithmetic number, because the mean of its divisors is an integer number (1913828014449).

Almost surely, 2^{12758832510505} is an apocalyptic number.

It is an amenable number.

12758832510505 is a deficient number, since it is larger than the sum of its proper divisors (2551791605087).

12758832510505 is an equidigital number, since it uses as much as digits as its factorization.

12758832510505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183835.

The product of its (nonzero) digits is 3360000, while the sum is 52.

The spelling of 12758832510505 in words is "twelve trillion, seven hundred fifty-eight billion, eight hundred thirty-two million, five hundred ten thousand, five hundred five".