20143793943 has 36 divisors (see below), whose sum is σ = 36007973040. Its totient is φ = 10625292288.

The previous prime is 20143793861. The next prime is 20143793951. The reversal of 20143793943 is 34939734102.

20143793943 is a `hidden beast` number, since 201 + 4 + 379 + 39 + 43 = 666.

It is not a de Polignac number, because 20143793943 - 2¹⁸ = 20143531799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143793993) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 935338 + ... + 956631.

Almost surely, 2^20143793943 is an apocalyptic number.

20143793943 is a deficient number, since it is larger than the sum of its proper divisors (15864179097).

20143793943 is a wasteful number, since it uses less digits than its factorization.

20143793943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892008 (or 1891992 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 20143793943 in words is "twenty billion, one hundred forty-three million, seven hundred ninety-three thousand, nine hundred forty-three".