20013055543087 has 2 divisors, whose sum is σ = 20013055543088. Its totient is φ = 20013055543086.

The previous prime is 20013055543073. The next prime is 20013055543147. The reversal of 20013055543087 is 78034555031002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013055543087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013055543027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006527771543 + 10006527771544.

It is an arithmetic number, because the mean of its divisors is an integer number (10006527771544).

Almost surely, 2^{20013055543087} is an apocalyptic number.

20013055543087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013055543087 is an equidigital number, since it uses as much as digits as its factorization.

20013055543087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 20013055543087 in words is "twenty trillion, thirteen billion, fifty-five million, five hundred forty-three thousand, eighty-seven".