20670613856203 has 2 divisors, whose sum is σ = 20670613856204. Its totient is φ = 20670613856202.

The previous prime is 20670613856183. The next prime is 20670613856279. The reversal of 20670613856203 is 30265831607602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20670613856203 - 2¹³ = 20670613848011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20670613856303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10335306928101 + 10335306928102.

It is an arithmetic number, because the mean of its divisors is an integer number (10335306928102).

Almost surely, 2^{20670613856203} is an apocalyptic number.

20670613856203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20670613856203 is an equidigital number, since it uses as much as digits as its factorization.

20670613856203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 20670613856203 in words is "twenty trillion, six hundred seventy billion, six hundred thirteen million, eight hundred fifty-six thousand, two hundred three".