20342884838597 has 2 divisors, whose sum is σ = 20342884838598. Its totient is φ = 20342884838596.

The previous prime is 20342884838593. The next prime is 20342884838609. The reversal of 20342884838597 is 79583848824302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12503338432036 + 7839546406561 = 3536006^2 + 2799919^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342884838597 - 2² = 20342884838593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20342884838597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20342884838593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171442419298 + 10171442419299.

It is an arithmetic number, because the mean of its divisors is an integer number (10171442419299).

Almost surely, 2^{20342884838597} is an apocalyptic number.

It is an amenable number.

20342884838597 is a deficient number, since it is larger than the sum of its proper divisors (1).

20342884838597 is an equidigital number, since it uses as much as digits as its factorization.

20342884838597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 743178240, while the sum is 71.

The spelling of 20342884838597 in words is "twenty trillion, three hundred forty-two billion, eight hundred eighty-four million, eight hundred thirty-eight thousand, five hundred ninety-seven".