1609636027497 has 4 divisors (see below), whose sum is σ = 2146181370000. Its totient is φ = 1073090684996.

The previous prime is 1609636027409. The next prime is 1609636027511. The reversal of 1609636027497 is 7947206369061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1609636027497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1609636027497.

It is not an unprimeable number, because it can be changed into a prime (1609636027297) 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, 268272671247 + ... + 268272671252.

It is an arithmetic number, because the mean of its divisors is an integer number (536545342500).

Almost surely, 2^{1609636027497} is an apocalyptic number.

It is an amenable number.

1609636027497 is a deficient number, since it is larger than the sum of its proper divisors (536545342503).

1609636027497 is an equidigital number, since it uses as much as digits as its factorization.

1609636027497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536545342502.

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 1609636027497 in words is "one trillion, six hundred nine billion, six hundred thirty-six million, twenty-seven thousand, four hundred ninety-seven".