20488289597 has 2 divisors, whose sum is σ = 20488289598. Its totient is φ = 20488289596.

The previous prime is 20488289537. The next prime is 20488289711. The reversal of 20488289597 is 79598288402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11990031001 + 8498258596 = 109499^2 + 92186^2 .

It is a cyclic number.

It is not a de Polignac number, because 20488289597 - 2⁶ = 20488289533 is a prime.

It is a super-3 number, since 3×20488289597³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20488289537) 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, 10244144798 + 10244144799.

It is an arithmetic number, because the mean of its divisors is an integer number (10244144799).

Almost surely, 2^20488289597 is an apocalyptic number.

It is an amenable number.

20488289597 is a deficient number, since it is larger than the sum of its proper divisors (1).

20488289597 is an equidigital number, since it uses as much as digits as its factorization.

20488289597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23224320, while the sum is 62.

The spelling of 20488289597 in words is "twenty billion, four hundred eighty-eight million, two hundred eighty-nine thousand, five hundred ninety-seven".