20013656303 has 2 divisors, whose sum is σ = 20013656304. Its totient is φ = 20013656302.

The previous prime is 20013656261. The next prime is 20013656323. The reversal of 20013656303 is 30365631002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013656303 - 2¹² = 20013652207 is a prime.

It is a super-2 number, since 2×20013656303² (a number of 21 digits) contains 22 as substring.

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 (20013656323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006828151 + 10006828152.

It is an arithmetic number, because the mean of its divisors is an integer number (10006828152).

Almost surely, 2^20013656303 is an apocalyptic number.

20013656303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013656303 is an equidigital number, since it uses as much as digits as its factorization.

20013656303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 29.

The spelling of 20013656303 in words is "twenty billion, thirteen million, six hundred fifty-six thousand, three hundred three".