20547125636 has 12 divisors (see below), whose sum is σ = 36074597328. Its totient is φ = 10240097832.

The previous prime is 20547125623. The next prime is 20547125699. The reversal of 20547125636 is 63652174502.

It is a junction number, because it is equal to n+sod(n) for n = 20547125593 and 20547125602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8364866 + ... + 8367321.

It is an arithmetic number, because the mean of its divisors is an integer number (3006216444).

Almost surely, 2^20547125636 is an apocalyptic number.

It is an amenable number.

20547125636 is a deficient number, since it is larger than the sum of its proper divisors (15527471692).

20547125636 is a wasteful number, since it uses less digits than its factorization.

20547125636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16732498 (or 16732496 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20547125636 in words is "twenty billion, five hundred forty-seven million, one hundred twenty-five thousand, six hundred thirty-six".