20387943032769 has 24 divisors (see below), whose sum is σ = 31725282126720. Its totient is φ = 12542191902432.

The previous prime is 20387943032753. The next prime is 20387943032813. The reversal of 20387943032769 is 96723034978302.

20387943032769 is a `hidden beast` number, since 2 + 0 + 38 + 79 + 430 + 32 + 76 + 9 = 666.

It is not a de Polignac number, because 20387943032769 - 2⁴ = 20387943032753 is a prime.

It is a super-2 number, since 2×20387943032769² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20387943033769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29058649 + ... + 29751990.

It is an arithmetic number, because the mean of its divisors is an integer number (1321886755280).

Almost surely, 2^{20387943032769} is an apocalyptic number.

It is an amenable number.

20387943032769 is a deficient number, since it is larger than the sum of its proper divisors (11337339093951).

20387943032769 is a wasteful number, since it uses less digits than its factorization.

20387943032769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58813621 (or 58813618 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 63.

The spelling of 20387943032769 in words is "twenty trillion, three hundred eighty-seven billion, nine hundred forty-three million, thirty-two thousand, seven hundred sixty-nine".