16656135645 has 64 divisors (see below), whose sum is σ = 29229984000. Its totient is φ = 8061505536.

The previous prime is 16656135631. The next prime is 16656135697. The reversal of 16656135645 is 54653165661.

It is not a de Polignac number, because 16656135645 - 2⁸ = 16656135389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16656135594 and 16656135603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9309411 + ... + 9311199.

It is an arithmetic number, because the mean of its divisors is an integer number (456718500).

Almost surely, 2^16656135645 is an apocalyptic number.

16656135645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16656135645 is a deficient number, since it is larger than the sum of its proper divisors (12573848355).

16656135645 is a wasteful number, since it uses less digits than its factorization.

16656135645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102.

The product of its digits is 1944000, while the sum is 48.

The spelling of 16656135645 in words is "sixteen billion, six hundred fifty-six million, one hundred thirty-five thousand, six hundred forty-five".