20501155200563 has 2 divisors, whose sum is σ = 20501155200564. Its totient is φ = 20501155200562.

The previous prime is 20501155200553. The next prime is 20501155200593. The reversal of 20501155200563 is 36500255110502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20501155200563 - 2⁸ = 20501155200307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20501155200523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10250577600281 + 10250577600282.

It is an arithmetic number, because the mean of its divisors is an integer number (10250577600282).

Almost surely, 2^{20501155200563} is an apocalyptic number.

20501155200563 is a deficient number, since it is larger than the sum of its proper divisors (1).

20501155200563 is an equidigital number, since it uses as much as digits as its factorization.

20501155200563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 20501155200563 in words is "twenty trillion, five hundred one billion, one hundred fifty-five million, two hundred thousand, five hundred sixty-three".