12781404611673 has 32 divisors (see below), whose sum is σ = 17374837439232. Its totient is φ = 8355761971200.

The previous prime is 12781404611629. The next prime is 12781404611681. The reversal of 12781404611673 is 37611640418721.

It is not a de Polignac number, because 12781404611673 - 2²⁵ = 12781371057241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12781474611673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231868311 + ... + 231923427.

It is an arithmetic number, because the mean of its divisors is an integer number (542963669976).

Almost surely, 2^{12781404611673} is an apocalyptic number.

It is an amenable number.

12781404611673 is a deficient number, since it is larger than the sum of its proper divisors (4593432827559).

12781404611673 is a wasteful number, since it uses less digits than its factorization.

12781404611673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61025.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 12781404611673 in words is "twelve trillion, seven hundred eighty-one billion, four hundred four million, six hundred eleven thousand, six hundred seventy-three".