20301642650 has 12 divisors (see below), whose sum is σ = 37761055422. Its totient is φ = 8120657040.

The previous prime is 20301642643. The next prime is 20301642667. The reversal of 20301642650 is 5624610302.

It can be written as a sum of positive squares in 3 ways, for example, as 10640128801 + 9661513849 = 103151^2 + 98293^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203016377 + ... + 203016476.

Almost surely, 2^20301642650 is an apocalyptic number.

20301642650 is a deficient number, since it is larger than the sum of its proper divisors (17459412772).

20301642650 is a wasteful number, since it uses less digits than its factorization.

20301642650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406032865 (or 406032860 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 20301642650 in words is "twenty billion, three hundred one million, six hundred forty-two thousand, six hundred fifty".