20355141443 has 32 divisors (see below), whose sum is σ = 25668034560. Its totient is φ = 15714155520.

The previous prime is 20355141439. The next prime is 20355141461. The reversal of 20355141443 is 34414155302.

It is not a de Polignac number, because 20355141443 - 2² = 20355141439 is a prime.

It is a super-2 number, since 2×20355141443² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20355141463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610478 + ... + 642956.

It is an arithmetic number, because the mean of its divisors is an integer number (802126080).

Almost surely, 2^20355141443 is an apocalyptic number.

20355141443 is a deficient number, since it is larger than the sum of its proper divisors (5312893117).

20355141443 is a wasteful number, since it uses less digits than its factorization.

20355141443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32667.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20355141443 its reverse (34414155302), we get a palindrome (54769296745).

The spelling of 20355141443 in words is "twenty billion, three hundred fifty-five million, one hundred forty-one thousand, four hundred forty-three".