20252775659 has 16 divisors (see below), whose sum is σ = 21643401600. Its totient is φ = 18895415616.

The previous prime is 20252775637. The next prime is 20252775707. The reversal of 20252775659 is 95657725202.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20252775659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20252775619) 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 in 15 ways as a sum of consecutive naturals, for example, 936632 + ... + 958010.

It is an arithmetic number, because the mean of its divisors is an integer number (1352712600).

Almost surely, 2^20252775659 is an apocalyptic number.

20252775659 is a deficient number, since it is larger than the sum of its proper divisors (1390625941).

20252775659 is a wasteful number, since it uses less digits than its factorization.

20252775659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22154.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 20252775659 in words is "twenty billion, two hundred fifty-two million, seven hundred seventy-five thousand, six hundred fifty-nine".