12720775578783 has 8 divisors (see below), whose sum is σ = 17958741993648. Its totient is φ = 7981663108224.

The previous prime is 12720775578671. The next prime is 12720775578859. The reversal of 12720775578783 is 38787557702721.

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

It is not a de Polignac number, because 12720775578783 - 2²² = 12720771384479 is a prime.

It is a super-2 number, since 2×12720775578783² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720775578883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124713486016 + ... + 124713486117.

It is an arithmetic number, because the mean of its divisors is an integer number (2244842749206).

Almost surely, 2^{12720775578783} is an apocalyptic number.

12720775578783 is a deficient number, since it is larger than the sum of its proper divisors (5237966414865).

12720775578783 is a wasteful number, since it uses less digits than its factorization.

12720775578783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249426972153.

The product of its (nonzero) digits is 322694400, while the sum is 69.

The spelling of 12720775578783 in words is "twelve trillion, seven hundred twenty billion, seven hundred seventy-five million, five hundred seventy-eight thousand, seven hundred eighty-three".