12735073054621 has 4 divisors (see below), whose sum is σ = 12975357451932. Its totient is φ = 12494788657312.

The previous prime is 12735073054589. The next prime is 12735073054709. The reversal of 12735073054621 is 12645037053721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7912327648996 + 4822745405625 = 2812886^2 + 2196075^2 .

It is a cyclic number.

It is not a de Polignac number, because 12735073054621 - 2⁵ = 12735073054589 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 (12735073054021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120142198576 + ... + 120142198681.

It is an arithmetic number, because the mean of its divisors is an integer number (3243839362983).

Almost surely, 2^{12735073054621} is an apocalyptic number.

It is an amenable number.

12735073054621 is a deficient number, since it is larger than the sum of its proper divisors (240284397311).

12735073054621 is an equidigital number, since it uses as much as digits as its factorization.

12735073054621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240284397310.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 12735073054621 in words is "twelve trillion, seven hundred thirty-five billion, seventy-three million, fifty-four thousand, six hundred twenty-one".