20013656323 has 2 divisors, whose sum is σ = 20013656324. Its totient is φ = 20013656322.

The previous prime is 20013656303. The next prime is 20013656431. The reversal of 20013656323 is 32365631002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20013656323 - 2¹³ = 20013648131 is a prime.

It is not a weakly prime, because it can be changed into another prime (20013656303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006828161 + 10006828162.

It is an arithmetic number, because the mean of its divisors is an integer number (10006828162).

Almost surely, 2^20013656323 is an apocalyptic number.

20013656323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013656323 is an equidigital number, since it uses as much as digits as its factorization.

20013656323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 20013656323 in words is "twenty billion, thirteen million, six hundred fifty-six thousand, three hundred twenty-three".