20852747259 has 16 divisors (see below), whose sum is σ = 28146281760. Its totient is φ = 13730858240.

The previous prime is 20852747257. The next prime is 20852747263. The reversal of 20852747259 is 95274725802.

It is a cyclic number.

It is not a de Polignac number, because 20852747259 - 2¹ = 20852747257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20852747257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209749 + ... + 292745.

It is an arithmetic number, because the mean of its divisors is an integer number (1759142610).

Almost surely, 2^20852747259 is an apocalyptic number.

20852747259 is a deficient number, since it is larger than the sum of its proper divisors (7293534501).

20852747259 is an equidigital number, since it uses as much as digits as its factorization.

20852747259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84030.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 20852747259 in words is "twenty billion, eight hundred fifty-two million, seven hundred forty-seven thousand, two hundred fifty-nine".