1606405243675 has 24 divisors (see below), whose sum is σ = 1994829457664. Its totient is φ = 1283262406560.

The previous prime is 1606405243673. The next prime is 1606405243687. The reversal of 1606405243675 is 5763425046061.

It is not a de Polignac number, because 1606405243675 - 2¹ = 1606405243673 is a prime.

It is a super-2 number, since 2×1606405243675² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606405243673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140377504 + ... + 140388946.

Almost surely, 2^{1606405243675} is an apocalyptic number.

1606405243675 is a deficient number, since it is larger than the sum of its proper divisors (388424213989).

1606405243675 is a wasteful number, since it uses less digits than its factorization.

1606405243675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19099 (or 19094 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 1606405243675 in words is "one trillion, six hundred six billion, four hundred five million, two hundred forty-three thousand, six hundred seventy-five".