18353870020597 has 2 divisors, whose sum is σ = 18353870020598. Its totient is φ = 18353870020596.

The previous prime is 18353870020543. The next prime is 18353870020699. The reversal of 18353870020597 is 79502007835381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18147250681681 + 206619338916 = 4259959^2 + 454554^2 .

It is a cyclic number.

It is not a de Polignac number, because 18353870020597 - 2⁴³ = 9557776998389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18353870020397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9176935010298 + 9176935010299.

It is an arithmetic number, because the mean of its divisors is an integer number (9176935010299).

Almost surely, 2^{18353870020597} is an apocalyptic number.

It is an amenable number.

18353870020597 is a deficient number, since it is larger than the sum of its proper divisors (1).

18353870020597 is an equidigital number, since it uses as much as digits as its factorization.

18353870020597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 18353870020597 in words is "eighteen trillion, three hundred fifty-three billion, eight hundred seventy million, twenty thousand, five hundred ninety-seven".