20016566452 has 24 divisors (see below), whose sum is σ = 36223310592. Its totient is φ = 9668198400.

The previous prime is 20016566429. The next prime is 20016566473. The reversal of 20016566452 is 25466561002.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 73549 + ... + 213172.

It is an arithmetic number, because the mean of its divisors is an integer number (1509304608).

Almost surely, 2^20016566452 is an apocalyptic number.

It is an amenable number.

20016566452 is a deficient number, since it is larger than the sum of its proper divisors (16206744140).

20016566452 is a wasteful number, since it uses less digits than its factorization.

20016566452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287319 (or 287317 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 20016566452 in words is "twenty billion, sixteen million, five hundred sixty-six thousand, four hundred fifty-two".