20143604943 has 96 divisors (see below), whose sum is σ = 37691596800. Its totient is φ = 10059033600.

The previous prime is 20143604903. The next prime is 20143604951. The reversal of 20143604943 is 34940634102.

It is a happy number.

20143604943 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 3 + 604 + 9 + 43 = 666.

It is not a de Polignac number, because 20143604943 - 2¹⁰ = 20143603919 is a prime.

It is a super-3 number, since 3×20143604943³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20143604898 and 20143604907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143604903) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4841298 + ... + 4845456.

It is an arithmetic number, because the mean of its divisors is an integer number (392620800).

Almost surely, 2^20143604943 is an apocalyptic number.

20143604943 is a deficient number, since it is larger than the sum of its proper divisors (17547991857).

20143604943 is a wasteful number, since it uses less digits than its factorization.

20143604943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453 (or 4450 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 20143604943 in words is "twenty billion, one hundred forty-three million, six hundred four thousand, nine hundred forty-three".