161111237573 has 8 divisors (see below), whose sum is σ = 189277538016. Its totient is φ = 135198241200.

The previous prime is 161111237533. The next prime is 161111237597. The reversal of 161111237573 is 375732111161.

161111237573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161111237573 - 2¹⁸ = 161110975429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161111237503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563325863 + ... + 563326148.

It is an arithmetic number, because the mean of its divisors is an integer number (23659692252).

Almost surely, 2^161111237573 is an apocalyptic number.

161111237573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161111237573 is a deficient number, since it is larger than the sum of its proper divisors (28166300443).

161111237573 is a wasteful number, since it uses less digits than its factorization.

161111237573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126652035.

The product of its digits is 26460, while the sum is 38.

The spelling of 161111237573 in words is "one hundred sixty-one billion, one hundred eleven million, two hundred thirty-seven thousand, five hundred seventy-three".