16657780552 has 16 divisors (see below), whose sum is σ = 35695244160. Its totient is φ = 7139048784.

The previous prime is 16657780547. The next prime is 16657780589. The reversal of 16657780552 is 25508775661.

It is a self number, because there is not a number n which added to its sum of digits gives 16657780552.

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, 148730128 + ... + 148730239.

It is an arithmetic number, because the mean of its divisors is an integer number (2230952760).

Almost surely, 2^16657780552 is an apocalyptic number.

It is an amenable number.

16657780552 is an abundant number, since it is smaller than the sum of its proper divisors (19037463608).

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

16657780552 is a wasteful number, since it uses less digits than its factorization.

16657780552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297460380 (or 297460376 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 52.

The spelling of 16657780552 in words is "sixteen billion, six hundred fifty-seven million, seven hundred eighty thousand, five hundred fifty-two".