1566613516434 has 16 divisors (see below), whose sum is σ = 3184591411200. Its totient is φ = 513643775760.

The previous prime is 1566613516423. The next prime is 1566613516441. The reversal of 1566613516434 is 4346153166651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140182034 + ... + 2140182765.

It is an arithmetic number, because the mean of its divisors is an integer number (199036963200).

Almost surely, 2^{1566613516434} is an apocalyptic number.

1566613516434 is an abundant number, since it is smaller than the sum of its proper divisors (1617977894766).

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

1566613516434 is a wasteful number, since it uses less digits than its factorization.

1566613516434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280364865.

The product of its digits is 4665600, while the sum is 51.

The spelling of 1566613516434 in words is "one trillion, five hundred sixty-six billion, six hundred thirteen million, five hundred sixteen thousand, four hundred thirty-four".