20639460570653 has 12 divisors (see below), whose sum is σ = 21155605458240. Its totient is φ = 20135616186720.

The previous prime is 20639460570647. The next prime is 20639460570661. The reversal of 20639460570653 is 35607506493602.

It is a happy number.

It is not a de Polignac number, because 20639460570653 - 2⁸ = 20639460570397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20639460570353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97154876 + ... + 97367082.

It is an arithmetic number, because the mean of its divisors is an integer number (1762967121520).

Almost surely, 2^{20639460570653} is an apocalyptic number.

It is an amenable number.

20639460570653 is a deficient number, since it is larger than the sum of its proper divisors (516144887587).

20639460570653 is an equidigital number, since it uses as much as digits as its factorization.

20639460570653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270148 (or 270107 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 56.

The spelling of 20639460570653 in words is "twenty trillion, six hundred thirty-nine billion, four hundred sixty million, five hundred seventy thousand, six hundred fifty-three".