20455630106263 has 4 divisors (see below), whose sum is σ = 22315232843208. Its totient is φ = 18596027369320.

The previous prime is 20455630106221. The next prime is 20455630106287. The reversal of 20455630106263 is 36260103655402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20455630106263 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 (20455630106363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929801368456 + ... + 929801368477.

It is an arithmetic number, because the mean of its divisors is an integer number (5578808210802).

Almost surely, 2^{20455630106263} is an apocalyptic number.

20455630106263 is a deficient number, since it is larger than the sum of its proper divisors (1859602736945).

20455630106263 is a wasteful number, since it uses less digits than its factorization.

20455630106263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859602736944.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 20455630106263 in words is "twenty trillion, four hundred fifty-five billion, six hundred thirty million, one hundred six thousand, two hundred sixty-three".