20662606963 has 2 divisors, whose sum is σ = 20662606964. Its totient is φ = 20662606962.

The previous prime is 20662606961. The next prime is 20662607033. The reversal of 20662606963 is 36960626602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20662606963 - 2¹ = 20662606961 is a prime.

Together with 20662606961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20662606961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10331303481 + 10331303482.

It is an arithmetic number, because the mean of its divisors is an integer number (10331303482).

Almost surely, 2^20662606963 is an apocalyptic number.

20662606963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20662606963 is an equidigital number, since it uses as much as digits as its factorization.

20662606963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 46.

The spelling of 20662606963 in words is "twenty billion, six hundred sixty-two million, six hundred six thousand, nine hundred sixty-three".