12735153217 has 4 divisors (see below), whose sum is σ = 12735615060. Its totient is φ = 12734691376.

The previous prime is 12735153157. The next prime is 12735153239. The reversal of 12735153217 is 71235153721.

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 9920956816 + 2814196401 = 99604^2 + 53049^2 .

It is a cyclic number.

It is not a de Polignac number, because 12735153217 - 2³¹ = 10587669569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12735153317) 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, 186742 + ... + 245647.

It is an arithmetic number, because the mean of its divisors is an integer number (3183903765).

Almost surely, 2^12735153217 is an apocalyptic number.

It is an amenable number.

12735153217 is a deficient number, since it is larger than the sum of its proper divisors (461843).

12735153217 is an equidigital number, since it uses as much as digits as its factorization.

12735153217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461842.

The product of its digits is 44100, while the sum is 37.

The spelling of 12735153217 in words is "twelve billion, seven hundred thirty-five million, one hundred fifty-three thousand, two hundred seventeen".