20166616652 has 48 divisors (see below), whose sum is σ = 43461046272. Its totient is φ = 7973363520.

The previous prime is 20166616633. The next prime is 20166616753. The reversal of 20166616652 is 25661666102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648377 + ... + 678767.

It is an arithmetic number, because the mean of its divisors is an integer number (905438464).

Almost surely, 2^20166616652 is an apocalyptic number.

It is an amenable number.

20166616652 is an abundant number, since it is smaller than the sum of its proper divisors (23294429620).

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

20166616652 is a wasteful number, since it uses less digits than its factorization.

20166616652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32238 (or 32236 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 20166616652 in words is "twenty billion, one hundred sixty-six million, six hundred sixteen thousand, six hundred fifty-two".