12729747541 has 8 divisors (see below), whose sum is σ = 14612374080. Its totient is φ = 10863143808.

The previous prime is 12729747539. The next prime is 12729747551. The reversal of 12729747541 is 14574792721.

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 12729747541 - 2¹ = 12729747539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729747551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4003996 + ... + 4007173.

It is an arithmetic number, because the mean of its divisors is an integer number (1826546760).

Almost surely, 2^12729747541 is an apocalyptic number.

It is an amenable number.

12729747541 is a deficient number, since it is larger than the sum of its proper divisors (1882626539).

12729747541 is an equidigital number, since it uses as much as digits as its factorization.

12729747541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011403.

The product of its digits is 987840, while the sum is 49.

The spelling of 12729747541 in words is "twelve billion, seven hundred twenty-nine million, seven hundred forty-seven thousand, five hundred forty-one".