20545652136 has 64 divisors (see below), whose sum is σ = 51975000000. Its totient is φ = 6767202816.

The previous prime is 20545652123. The next prime is 20545652177. The reversal of 20545652136 is 63125654502.

It is a junction number, because it is equal to n+sod(n) for n = 20545652094 and 20545652103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5870115 + ... + 5873613.

It is an arithmetic number, because the mean of its divisors is an integer number (812109375).

Almost surely, 2^20545652136 is an apocalyptic number.

It is an amenable number.

20545652136 is an abundant number, since it is smaller than the sum of its proper divisors (31429347864).

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

20545652136 is a wasteful number, since it uses less digits than its factorization.

20545652136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346 (or 6342 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 20545652136 in words is "twenty billion, five hundred forty-five million, six hundred fifty-two thousand, one hundred thirty-six".