20401010443 has 16 divisors (see below), whose sum is σ = 22581504000. Its totient is φ = 18276647200.

The previous prime is 20401010387. The next prime is 20401010449. The reversal of 20401010443 is 34401010402.

It is a cyclic number.

It is not a de Polignac number, because 20401010443 - 2⁹ = 20401009931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20401010443.

It is not an unprimeable number, because it can be changed into a prime (20401010449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179433 + ... + 270181.

It is an arithmetic number, because the mean of its divisors is an integer number (1411344000).

Almost surely, 2^20401010443 is an apocalyptic number.

20401010443 is a deficient number, since it is larger than the sum of its proper divisors (2180493557).

20401010443 is a wasteful number, since it uses less digits than its factorization.

20401010443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91058.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20401010443 its reverse (34401010402), we get a palindrome (54802020845).

The spelling of 20401010443 in words is "twenty billion, four hundred one million, ten thousand, four hundred forty-three".