20245526559 has 16 divisors (see below), whose sum is σ = 31757689440. Its totient is φ = 12703075200.

The previous prime is 20245526549. The next prime is 20245526563. The reversal of 20245526559 is 95562554202.

20245526559 is a `hidden beast` number, since 2 + 0 + 2 + 45 + 52 + 6 + 559 = 666.

It is not a de Polignac number, because 20245526559 - 2¹¹ = 20245524511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245526519) 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, 22053492 + ... + 22054409.

It is an arithmetic number, because the mean of its divisors is an integer number (1984855590).

Almost surely, 2^20245526559 is an apocalyptic number.

20245526559 is a deficient number, since it is larger than the sum of its proper divisors (11512162881).

20245526559 is a wasteful number, since it uses less digits than its factorization.

20245526559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44107927 (or 44107921 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 20245526559 in words is "twenty billion, two hundred forty-five million, five hundred twenty-six thousand, five hundred fifty-nine".