20402443214 has 4 divisors (see below), whose sum is σ = 30603664824. Its totient is φ = 10201221606.

The previous prime is 20402443211. The next prime is 20402443249. The reversal of 20402443214 is 41234420402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402443211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100610802 + ... + 5100610805.

It is an arithmetic number, because the mean of its divisors is an integer number (7650916206).

Almost surely, 2^20402443214 is an apocalyptic number.

20402443214 is a deficient number, since it is larger than the sum of its proper divisors (10201221610).

20402443214 is a wasteful number, since it uses less digits than its factorization.

20402443214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201221609.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20402443214 its reverse (41234420402), we get a palindrome (61636863616).

The spelling of 20402443214 in words is "twenty billion, four hundred two million, four hundred forty-three thousand, two hundred fourteen".