161552144551349 has 16 divisors (see below), whose sum is σ = 170113806305280. Its totient is φ = 152996378839920.

The previous prime is 161552144551327. The next prime is 161552144551519. The reversal of 161552144551349 is 943155441255161.

It is a cyclic number.

It is not a de Polignac number, because 161552144551349 - 2¹⁶ = 161552144485813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161552144551294 and 161552144551303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161552144551549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1855363484 + ... + 1855450554.

It is an arithmetic number, because the mean of its divisors is an integer number (10632112894080).

Almost surely, 2^{161552144551349} is an apocalyptic number.

161552144551349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

161552144551349 is a deficient number, since it is larger than the sum of its proper divisors (8561661753931).

161552144551349 is a wasteful number, since it uses less digits than its factorization.

161552144551349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119800.

The product of its digits is 12960000, while the sum is 56.

The spelling of 161552144551349 in words is "one hundred sixty-one trillion, five hundred fifty-two billion, one hundred forty-four million, five hundred fifty-one thousand, three hundred forty-nine".