20523189763 has 2 divisors, whose sum is σ = 20523189764. Its totient is φ = 20523189762.

The previous prime is 20523189751. The next prime is 20523189773. The reversal of 20523189763 is 36798132502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20523189763 is a prime.

It is not a weakly prime, because it can be changed into another prime (20523189773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261594881 + 10261594882.

It is an arithmetic number, because the mean of its divisors is an integer number (10261594882).

Almost surely, 2^20523189763 is an apocalyptic number.

20523189763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523189763 is an equidigital number, since it uses as much as digits as its factorization.

20523189763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 20523189763 in words is "twenty billion, five hundred twenty-three million, one hundred eighty-nine thousand, seven hundred sixty-three".