20563102650 has 24 divisors (see below), whose sum is σ = 50996494944. Its totient is φ = 5483494000.

The previous prime is 20563102639. The next prime is 20563102667. The reversal of 20563102650 is 5620136502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68543526 + ... + 68543825.

It is an arithmetic number, because the mean of its divisors is an integer number (2124853956).

Almost surely, 2^20563102650 is an apocalyptic number.

20563102650 is an abundant number, since it is smaller than the sum of its proper divisors (30433392294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20563102650 is a wasteful number, since it uses less digits than its factorization.

20563102650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137087366 (or 137087361 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20563102650 in words is "twenty billion, five hundred sixty-three million, one hundred two thousand, six hundred fifty".