20600620636 has 24 divisors (see below), whose sum is σ = 36329441904. Its totient is φ = 10221010560.

The previous prime is 20600620627. The next prime is 20600620637. The reversal of 20600620636 is 63602600602.

It is a junction number, because it is equal to n+sod(n) for n = 20600620598 and 20600620607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20600620637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333456 + ... + 390376.

It is an arithmetic number, because the mean of its divisors is an integer number (1513726746).

Almost surely, 2^20600620636 is an apocalyptic number.

It is an amenable number.

20600620636 is a deficient number, since it is larger than the sum of its proper divisors (15728821268).

20600620636 is a wasteful number, since it uses less digits than its factorization.

20600620636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57621 (or 57619 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 20600620636 in words is "twenty billion, six hundred million, six hundred twenty thousand, six hundred thirty-six".