20041643056 has 10 divisors (see below), whose sum is σ = 38830683452. Its totient is φ = 10020821520.

The previous prime is 20041643053. The next prime is 20041643081. The reversal of 20041643056 is 65034614002.

It is a super-2 number, since 2×20041643056² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20041643053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626301330 + ... + 626301361.

Almost surely, 2^20041643056 is an apocalyptic number.

It is an amenable number.

20041643056 is a deficient number, since it is larger than the sum of its proper divisors (18789040396).

20041643056 is a wasteful number, since it uses less digits than its factorization.

20041643056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252602699 (or 1252602693 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20041643056 in words is "twenty billion, forty-one million, six hundred forty-three thousand, fifty-six".