20709653370245 has 8 divisors (see below), whose sum is σ = 28401810336384. Its totient is φ = 14200905168144.

The previous prime is 20709653370239. The next prime is 20709653370247. The reversal of 20709653370245 is 54207335690702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20709653370245 - 2³⁶ = 20640933893509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20709653370247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295852190969 + ... + 295852191038.

It is an arithmetic number, because the mean of its divisors is an integer number (3550226292048).

Almost surely, 2^{20709653370245} is an apocalyptic number.

It is an amenable number.

20709653370245 is a deficient number, since it is larger than the sum of its proper divisors (7692156966139).

20709653370245 is an equidigital number, since it uses as much as digits as its factorization.

20709653370245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591704382019.

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 20709653370245 in words is "twenty trillion, seven hundred nine billion, six hundred fifty-three million, three hundred seventy thousand, two hundred forty-five".