16566550530 has 32 divisors (see below), whose sum is σ = 39763562688. Its totient is φ = 4417320000.

The previous prime is 16566550519. The next prime is 16566550537. The reversal of 16566550530 is 3505566561.

It is not an unprimeable number, because it can be changed into a prime (16566550537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401880 + ... + 441180.

It is an arithmetic number, because the mean of its divisors is an integer number (1242611334).

Almost surely, 2^16566550530 is an apocalyptic number.

16566550530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16566550530 is an abundant number, since it is smaller than the sum of its proper divisors (23197012158).

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

16566550530 is a wasteful number, since it uses less digits than its factorization.

16566550530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53362.

The product of its (nonzero) digits is 405000, while the sum is 42.

The spelling of 16566550530 in words is "sixteen billion, five hundred sixty-six million, five hundred fifty thousand, five hundred thirty".