20642275298 has 18 divisors (see below), whose sum is σ = 32684950251. Its totient is φ = 9776091204.

The previous prime is 20642275273. The next prime is 20642275331. The reversal of 20642275298 is 89257224602.

It can be written as a sum of positive squares in only one way, i.e., 10321137649 + 10321137649 = 101593^2 + 101593^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=101593.

It is a super-2 number, since 2×20642275298² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3857861 + ... + 3863207.

Almost surely, 2^20642275298 is an apocalyptic number.

20642275298 is a deficient number, since it is larger than the sum of its proper divisors (12042674953).

20642275298 is an frugal number, since it uses more digits than its factorization.

20642275298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10734 (or 5368 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 20642275298 in words is "twenty billion, six hundred forty-two million, two hundred seventy-five thousand, two hundred ninety-eight".