20527530842473 has 2 divisors, whose sum is σ = 20527530842474. Its totient is φ = 20527530842472.

The previous prime is 20527530842443. The next prime is 20527530842491. The reversal of 20527530842473 is 37424803572502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20408014055529 + 119516786944 = 4517523^2 + 345712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20527530842473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20527530842473.

It is not a weakly prime, because it can be changed into another prime (20527530842443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10263765421236 + 10263765421237.

It is an arithmetic number, because the mean of its divisors is an integer number (10263765421237).

Almost surely, 2^{20527530842473} is an apocalyptic number.

It is an amenable number.

20527530842473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20527530842473 is an equidigital number, since it uses as much as digits as its factorization.

20527530842473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 20527530842473 in words is "twenty trillion, five hundred twenty-seven billion, five hundred thirty million, eight hundred forty-two thousand, four hundred seventy-three".