1606325312563 has 4 divisors (see below), whose sum is σ = 1676165543568. Its totient is φ = 1536485081560.

The previous prime is 1606325312533. The next prime is 1606325312587. The reversal of 1606325312563 is 3652135236061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1606325312563 - 2²¹ = 1606323215411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606325312533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34920115468 + ... + 34920115513.

It is an arithmetic number, because the mean of its divisors is an integer number (419041385892).

Almost surely, 2^{1606325312563} is an apocalyptic number.

1606325312563 is a deficient number, since it is larger than the sum of its proper divisors (69840231005).

1606325312563 is an equidigital number, since it uses as much as digits as its factorization.

1606325312563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69840231004.

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 1606325312563 in words is "one trillion, six hundred six billion, three hundred twenty-five million, three hundred twelve thousand, five hundred sixty-three".