20440202999 has 2 divisors, whose sum is σ = 20440203000. Its totient is φ = 20440202998.

The previous prime is 20440202963. The next prime is 20440203029. The reversal of 20440202999 is 99920204402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20440202999 - 2⁸ = 20440202743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20340202999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220101499 + 10220101500.

It is an arithmetic number, because the mean of its divisors is an integer number (10220101500).

Almost surely, 2^20440202999 is an apocalyptic number.

20440202999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20440202999 is an equidigital number, since it uses as much as digits as its factorization.

20440202999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 20440202999 in words is "twenty billion, four hundred forty million, two hundred two thousand, nine hundred ninety-nine".