12780045215 has 8 divisors (see below), whose sum is σ = 17526919200. Its totient is φ = 8763459552.

The previous prime is 12780045209. The next prime is 12780045217. The reversal of 12780045215 is 51254008721.

12780045215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12780045215 - 2¹² = 12780041119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 365144149 = 12780045215 / (1 + 2 + 7 + 8 + 0 + 0 + 4 + 5 + 2 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780045217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182572040 + ... + 182572109.

It is an arithmetic number, because the mean of its divisors is an integer number (2190864900).

Almost surely, 2^12780045215 is an apocalyptic number.

12780045215 is a deficient number, since it is larger than the sum of its proper divisors (4746873985).

12780045215 is an equidigital number, since it uses as much as digits as its factorization.

12780045215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365144161.

The product of its (nonzero) digits is 22400, while the sum is 35.

The spelling of 12780045215 in words is "twelve billion, seven hundred eighty million, forty-five thousand, two hundred fifteen".