20517184552 has 16 divisors (see below), whose sum is σ = 38471996160. Its totient is φ = 10257985584.

The previous prime is 20517184531. The next prime is 20517184607. The reversal of 20517184552 is 25548171502.

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, 88953 + ... + 221239.

It is an arithmetic number, because the mean of its divisors is an integer number (2404499760).

Almost surely, 2^20517184552 is an apocalyptic number.

It is an amenable number.

20517184552 is a deficient number, since it is larger than the sum of its proper divisors (17954811608).

20517184552 is a wasteful number, since it uses less digits than its factorization.

20517184552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151680 (or 151676 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 20517184552 in words is "twenty billion, five hundred seventeen million, one hundred eighty-four thousand, five hundred fifty-two".