161605560011519 has 16 divisors (see below), whose sum is σ = 183401627661504. Its totient is φ = 141275763552000.

The previous prime is 161605560011507. The next prime is 161605560011537. The reversal of 161605560011519 is 915110065506161.

It is a cyclic number.

It is not a de Polignac number, because 161605560011519 - 2¹⁶ = 161605559945983 is a prime.

It is a super-2 number, since 2×161605560011519² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161605560011549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2675647142 + ... + 2675707539.

It is an arithmetic number, because the mean of its divisors is an integer number (11462601728844).

Almost surely, 2^{161605560011519} is an apocalyptic number.

161605560011519 is a deficient number, since it is larger than the sum of its proper divisors (21796067649985).

161605560011519 is a wasteful number, since it uses less digits than its factorization.

161605560011519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351354818.

The product of its (nonzero) digits is 243000, while the sum is 47.

The spelling of 161605560011519 in words is "one hundred sixty-one trillion, six hundred five billion, five hundred sixty million, eleven thousand, five hundred nineteen".