16120552556 has 24 divisors (see below), whose sum is σ = 28929791520. Its totient is φ = 7857449600.

The previous prime is 16120552537. The next prime is 16120552571. The reversal of 16120552556 is 65525502161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293615 + ... + 344166.

It is an arithmetic number, because the mean of its divisors is an integer number (1205407980).

Almost surely, 2^16120552556 is an apocalyptic number.

It is an amenable number.

16120552556 is a deficient number, since it is larger than the sum of its proper divisors (12809238964).

16120552556 is a wasteful number, since it uses less digits than its factorization.

16120552556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637945 (or 637943 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 16120552556 in words is "sixteen billion, one hundred twenty million, five hundred fifty-two thousand, five hundred fifty-six".