1606868552645 has 8 divisors (see below), whose sum is σ = 2012078883456. Its totient is φ = 1229603761936.

The previous prime is 1606868552603. The next prime is 1606868552651. The reversal of 1606868552645 is 5462558686061.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1606868552645 - 2³⁴ = 1589688683461 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 6986384897 + ... + 6986385126.

It is an arithmetic number, because the mean of its divisors is an integer number (251509860432).

Almost surely, 2^{1606868552645} is an apocalyptic number.

It is an amenable number.

1606868552645 is a deficient number, since it is larger than the sum of its proper divisors (405210330811).

1606868552645 is a wasteful number, since it uses less digits than its factorization.

1606868552645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13972770051.

The product of its (nonzero) digits is 82944000, while the sum is 62.

The spelling of 1606868552645 in words is "one trillion, six hundred six billion, eight hundred sixty-eight million, five hundred fifty-two thousand, six hundred forty-five".