20117553032287 has 2 divisors, whose sum is σ = 20117553032288. Its totient is φ = 20117553032286.

The previous prime is 20117553032201. The next prime is 20117553032309. The reversal of 20117553032287 is 78223035571102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20117553032287 - 2¹⁵ = 20117552999519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20117553032387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058776516143 + 10058776516144.

It is an arithmetic number, because the mean of its divisors is an integer number (10058776516144).

Almost surely, 2^{20117553032287} is an apocalyptic number.

20117553032287 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117553032287 is an equidigital number, since it uses as much as digits as its factorization.

20117553032287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 20117553032287 in words is "twenty trillion, one hundred seventeen billion, five hundred fifty-three million, thirty-two thousand, two hundred eighty-seven".