20440043102 has 4 divisors (see below), whose sum is σ = 30660064656. Its totient is φ = 10220021550.

The previous prime is 20440043093. The next prime is 20440043119. The reversal of 20440043102 is 20134004402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110010774 + ... + 5110010777.

It is an arithmetic number, because the mean of its divisors is an integer number (7665016164).

Almost surely, 2^20440043102 is an apocalyptic number.

20440043102 is a deficient number, since it is larger than the sum of its proper divisors (10220021554).

20440043102 is a wasteful number, since it uses less digits than its factorization.

20440043102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220021553.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20440043102 its reverse (20134004402), we get a palindrome (40574047504).

The spelling of 20440043102 in words is "twenty billion, four hundred forty million, forty-three thousand, one hundred two".