12781852653 has 16 divisors (see below), whose sum is σ = 18013899200. Its totient is φ = 8039243520.

The previous prime is 12781852613. The next prime is 12781852663. The reversal of 12781852653 is 35625818721.

It is not a de Polignac number, because 12781852653 - 2¹² = 12781848557 is a prime.

It is a super-4 number, since 4×12781852653⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781852613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451498 + ... + 478971.

It is an arithmetic number, because the mean of its divisors is an integer number (1125868700).

Almost surely, 2^12781852653 is an apocalyptic number.

It is an amenable number.

12781852653 is a deficient number, since it is larger than the sum of its proper divisors (5232046547).

12781852653 is a wasteful number, since it uses less digits than its factorization.

12781852653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930732.

The product of its digits is 806400, while the sum is 48.

The spelling of 12781852653 in words is "twelve billion, seven hundred eighty-one million, eight hundred fifty-two thousand, six hundred fifty-three".