20299574569 has 2 divisors, whose sum is σ = 20299574570. Its totient is φ = 20299574568.

The previous prime is 20299574567. The next prime is 20299574663. The reversal of 20299574569 is 96547599202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19074924544 + 1224650025 = 138112^2 + 34995^2 .

It is a cyclic number.

It is not a de Polignac number, because 20299574569 - 2¹ = 20299574567 is a prime.

It is a super-2 number, since 2×20299574569² (a number of 21 digits) contains 22 as substring.

Together with 20299574567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20299574567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149787284 + 10149787285.

It is an arithmetic number, because the mean of its divisors is an integer number (10149787285).

Almost surely, 2^20299574569 is an apocalyptic number.

It is an amenable number.

20299574569 is a deficient number, since it is larger than the sum of its proper divisors (1).

20299574569 is an equidigital number, since it uses as much as digits as its factorization.

20299574569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 20299574569 in words is "twenty billion, two hundred ninety-nine million, five hundred seventy-four thousand, five hundred sixty-nine".