16506056066 has 16 divisors (see below), whose sum is σ = 24832981944. Its totient is φ = 8228433024.

The previous prime is 16506056059. The next prime is 16506056087. The reversal of 16506056066 is 66065060561.

It can be written as a sum of positive squares in 4 ways, for example, as 8822657041 + 7683399025 = 93929^2 + 87655^2 .

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, 938990 + ... + 956406.

Almost surely, 2^16506056066 is an apocalyptic number.

16506056066 is a deficient number, since it is larger than the sum of its proper divisors (8326925878).

16506056066 is a wasteful number, since it uses less digits than its factorization.

16506056066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18805.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 16506056066 in words is "sixteen billion, five hundred six million, fifty-six thousand, sixty-six".