20015455346323 has 2 divisors, whose sum is σ = 20015455346324. Its totient is φ = 20015455346322.

The previous prime is 20015455346207. The next prime is 20015455346329. The reversal of 20015455346323 is 32364355451002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20015455346323 - 2⁴¹ = 17816432090771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20015455346323.

It is not a weakly prime, because it can be changed into another prime (20015455346329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10007727673161 + 10007727673162.

It is an arithmetic number, because the mean of its divisors is an integer number (10007727673162).

Almost surely, 2^{20015455346323} is an apocalyptic number.

20015455346323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20015455346323 is an equidigital number, since it uses as much as digits as its factorization.

20015455346323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 20015455346323 in words is "twenty trillion, fifteen billion, four hundred fifty-five million, three hundred forty-six thousand, three hundred twenty-three".