1609917234405 has 32 divisors (see below), whose sum is σ = 2583539981568. Its totient is φ = 856068864000.

The previous prime is 1609917234383. The next prime is 1609917234407. The reversal of 1609917234405 is 5044327199061.

It is a happy number.

It is not a de Polignac number, because 1609917234405 - 2⁴⁰ = 510405606629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609917234407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6684885 + ... + 6921525.

It is an arithmetic number, because the mean of its divisors is an integer number (80735624424).

Almost surely, 2^{1609917234405} is an apocalyptic number.

1609917234405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1609917234405 is a deficient number, since it is larger than the sum of its proper divisors (973622747163).

1609917234405 is a wasteful number, since it uses less digits than its factorization.

1609917234405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237997.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 1609917234405 in words is "one trillion, six hundred nine billion, nine hundred seventeen million, two hundred thirty-four thousand, four hundred five".