20502622573 has 2 divisors, whose sum is σ = 20502622574. Its totient is φ = 20502622572.

The previous prime is 20502622549. The next prime is 20502622607. The reversal of 20502622573 is 37522620502.

It is an a-pointer prime, because the next prime (20502622607) can be obtained adding 20502622573 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19106703529 + 1395919044 = 138227^2 + 37362^2 .

It is a cyclic number.

It is not a de Polignac number, because 20502622573 - 2¹⁷ = 20502491501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20502622513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10251311286 + 10251311287.

It is an arithmetic number, because the mean of its divisors is an integer number (10251311287).

Almost surely, 2^20502622573 is an apocalyptic number.

It is an amenable number.

20502622573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20502622573 is an equidigital number, since it uses as much as digits as its factorization.

20502622573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 20502622573 in words is "twenty billion, five hundred two million, six hundred twenty-two thousand, five hundred seventy-three".