20052147517 has 2 divisors, whose sum is σ = 20052147518. Its totient is φ = 20052147516.

The previous prime is 20052147509. The next prime is 20052147589. The reversal of 20052147517 is 71574125002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10276079641 + 9776067876 = 101371^2 + 98874^2 .

It is a cyclic number.

It is not a de Polignac number, because 20052147517 - 2³ = 20052147509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20052247517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10026073758 + 10026073759.

It is an arithmetic number, because the mean of its divisors is an integer number (10026073759).

Almost surely, 2^20052147517 is an apocalyptic number.

It is an amenable number.

20052147517 is a deficient number, since it is larger than the sum of its proper divisors (1).

20052147517 is an equidigital number, since it uses as much as digits as its factorization.

20052147517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The spelling of 20052147517 in words is "twenty billion, fifty-two million, one hundred forty-seven thousand, five hundred seventeen".