161235534239 has 8 divisors (see below), whose sum is σ = 173670456960. Its totient is φ = 148805210016.

The previous prime is 161235534227. The next prime is 161235534253. The reversal of 161235534239 is 932435532161.

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

It is a cyclic number.

It is not a de Polignac number, because 161235534239 - 2³² = 156940566943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161235534239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161235534289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076624 + ... + 1217205.

It is an arithmetic number, because the mean of its divisors is an integer number (21708807120).

Almost surely, 2^161235534239 is an apocalyptic number.

161235534239 is a deficient number, since it is larger than the sum of its proper divisors (12434922721).

161235534239 is a wasteful number, since it uses less digits than its factorization.

161235534239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299249.

The product of its digits is 583200, while the sum is 44.

The spelling of 161235534239 in words is "one hundred sixty-one billion, two hundred thirty-five million, five hundred thirty-four thousand, two hundred thirty-nine".