20869282345 has 4 divisors (see below), whose sum is σ = 25043138820. Its totient is φ = 16695425872.

The previous prime is 20869282337. The next prime is 20869282351. The reversal of 20869282345 is 54328296802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14120331241 + 6748951104 = 118829^2 + 82152^2 .

It is a cyclic number.

It is not a de Polignac number, because 20869282345 - 2³ = 20869282337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086928230 + ... + 2086928239.

It is an arithmetic number, because the mean of its divisors is an integer number (6260784705).

Almost surely, 2^20869282345 is an apocalyptic number.

It is an amenable number.

20869282345 is a deficient number, since it is larger than the sum of its proper divisors (4173856475).

20869282345 is an equidigital number, since it uses as much as digits as its factorization.

20869282345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173856474.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 20869282345 in words is "twenty billion, eight hundred sixty-nine million, two hundred eighty-two thousand, three hundred forty-five".