20686035852 has 48 divisors (see below), whose sum is σ = 53647046880. Its totient is φ = 6893213184.

The previous prime is 20686035833. The next prime is 20686035857. The reversal of 20686035852 is 25853068602.

20686035852 is a `hidden beast` number, since 2 + 0 + 6 + 8 + 60 + 3 + 585 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20686035798 and 20686035807.

It is not an unprimeable number, because it can be changed into a prime (20686035857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342868 + ... + 398660.

It is an arithmetic number, because the mean of its divisors is an integer number (1117646810).

Almost surely, 2^20686035852 is an apocalyptic number.

It is an amenable number.

20686035852 is an abundant number, since it is smaller than the sum of its proper divisors (32961011028).

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

20686035852 is a wasteful number, since it uses less digits than its factorization.

20686035852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59239 (or 59231 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 20686035852 in words is "twenty billion, six hundred eighty-six million, thirty-five thousand, eight hundred fifty-two".