20013243767336 has 16 divisors (see below), whose sum is σ = 37776676576500. Its totient is φ = 9939463346944.

The previous prime is 20013243767191. The next prime is 20013243767353. The reversal of 20013243767336 is 63376734231002.

It can be written as a sum of positive squares in 2 ways, for example, as 19592963843236 + 420279924100 = 4426394^2 + 648290^2 .

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, 8394815825 + ... + 8394818208.

Almost surely, 2^{20013243767336} is an apocalyptic number.

It is an amenable number.

20013243767336 is a deficient number, since it is larger than the sum of its proper divisors (17763432809164).

20013243767336 is a wasteful number, since it uses less digits than its factorization.

20013243767336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16789634188 (or 16789634184 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 47.

Adding to 20013243767336 its reverse (63376734231002), we get a palindrome (83389977998338).

The spelling of 20013243767336 in words is "twenty trillion, thirteen billion, two hundred forty-three million, seven hundred sixty-seven thousand, three hundred thirty-six".