12736317730 has 16 divisors (see below), whose sum is σ = 23715902520. Its totient is φ = 4918853632.

The previous prime is 12736317697. The next prime is 12736317731. The reversal of 12736317730 is 3771363721.

It can be written as a sum of positive squares in 4 ways, for example, as 12068560449 + 667757281 = 109857^2 + 25841^2 .

It is not an unprimeable number, because it can be changed into a prime (12736317731) 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, 21958879 + ... + 21959458.

Almost surely, 2^12736317730 is an apocalyptic number.

12736317730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12736317730 is a deficient number, since it is larger than the sum of its proper divisors (10979584790).

12736317730 is a wasteful number, since it uses less digits than its factorization.

12736317730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43918373.

The product of its (nonzero) digits is 111132, while the sum is 40.

The spelling of 12736317730 in words is "twelve billion, seven hundred thirty-six million, three hundred seventeen thousand, seven hundred thirty".