20187859094353 has 2 divisors, whose sum is σ = 20187859094354. Its totient is φ = 20187859094352.

The previous prime is 20187859094261. The next prime is 20187859094401. The reversal of 20187859094353 is 35349095878102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18109859002624 + 2078000091729 = 4255568^2 + 1441527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20187859094353 is a prime.

It is a super-2 number, since 2×20187859094353² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20187859091353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10093929547176 + 10093929547177.

It is an arithmetic number, because the mean of its divisors is an integer number (10093929547177).

Almost surely, 2^{20187859094353} is an apocalyptic number.

It is an amenable number.

20187859094353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20187859094353 is an equidigital number, since it uses as much as digits as its factorization.

20187859094353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 20187859094353 in words is "twenty trillion, one hundred eighty-seven billion, eight hundred fifty-nine million, ninety-four thousand, three hundred fifty-three".