20452523759 has 2 divisors, whose sum is σ = 20452523760. Its totient is φ = 20452523758.

The previous prime is 20452523747. The next prime is 20452523779. The reversal of 20452523759 is 95732525402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20452523759 is a prime.

It is a super-2 number, since 2×20452523759² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20452523779) 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, 10226261879 + 10226261880.

It is an arithmetic number, because the mean of its divisors is an integer number (10226261880).

Almost surely, 2^20452523759 is an apocalyptic number.

20452523759 is a deficient number, since it is larger than the sum of its proper divisors (1).

20452523759 is an equidigital number, since it uses as much as digits as its factorization.

20452523759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 20452523759 in words is "twenty billion, four hundred fifty-two million, five hundred twenty-three thousand, seven hundred fifty-nine".