12643000612738 has 8 divisors (see below), whose sum is σ = 18965430931788. Its totient is φ = 6321190302144.

The previous prime is 12643000612703. The next prime is 12643000612771. The reversal of 12643000612738 is 83721600034621.

It can be written as a sum of positive squares in 2 ways, for example, as 12028778872009 + 614221740729 = 3468253^2 + 783723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12643000612694 and 12643000612703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154951131 + ... + 155032702.

Almost surely, 2^{12643000612738} is an apocalyptic number.

12643000612738 is a deficient number, since it is larger than the sum of its proper divisors (6322430319050).

12643000612738 is a wasteful number, since it uses less digits than its factorization.

12643000612738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310004228.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 12643000612738 in words is "twelve trillion, six hundred forty-three billion, six hundred twelve thousand, seven hundred thirty-eight".