16566427044 has 24 divisors (see below), whose sum is σ = 42949996320. Its totient is φ = 5522142312.

The previous prime is 16566426983. The next prime is 16566427057. The reversal of 16566427044 is 44072466561.

16566427044 is a `hidden beast` number, since 1 + 6 + 566 + 42 + 7 + 0 + 44 = 666.

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, 76696314 + ... + 76696529.

It is an arithmetic number, because the mean of its divisors is an integer number (1789583180).

Almost surely, 2^16566427044 is an apocalyptic number.

It is an amenable number.

16566427044 is an abundant number, since it is smaller than the sum of its proper divisors (26383569276).

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

16566427044 is a wasteful number, since it uses less digits than its factorization.

16566427044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153392856 (or 153392848 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 16566427044 in words is "sixteen billion, five hundred sixty-six million, four hundred twenty-seven thousand, forty-four".