20522140636 has 6 divisors (see below), whose sum is σ = 35913746120. Its totient is φ = 10261070316.

The previous prime is 20522140621. The next prime is 20522140651. The reversal of 20522140636 is 63604122502.

It is an interprime number because it is at equal distance from previous prime (20522140621) and next prime (20522140651).

It is a junction number, because it is equal to n+sod(n) for n = 20522140598 and 20522140607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565267576 + ... + 2565267583.

Almost surely, 2^20522140636 is an apocalyptic number.

It is an amenable number.

20522140636 is a deficient number, since it is larger than the sum of its proper divisors (15391605484).

20522140636 is a wasteful number, since it uses less digits than its factorization.

20522140636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130535163 (or 5130535161 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20522140636 in words is "twenty billion, five hundred twenty-two million, one hundred forty thousand, six hundred thirty-six".