12752787779 has 8 divisors (see below), whose sum is σ = 13687925040. Its totient is φ = 11838203136.

The previous prime is 12752787767. The next prime is 12752787793. The reversal of 12752787779 is 97778725721.

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 12752787779 - 2¹⁶ = 12752722243 is a prime.

It is a super-2 number, since 2×12752787779² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12752787979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5136869 + ... + 5139350.

It is an arithmetic number, because the mean of its divisors is an integer number (1710990630).

Almost surely, 2^12752787779 is an apocalyptic number.

12752787779 is a deficient number, since it is larger than the sum of its proper divisors (935137261).

12752787779 is a wasteful number, since it uses less digits than its factorization.

12752787779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276309.

The product of its digits is 24202080, while the sum is 62.

The spelling of 12752787779 in words is "twelve billion, seven hundred fifty-two million, seven hundred eighty-seven thousand, seven hundred seventy-nine".