161017083247 has 4 divisors (see below), whose sum is σ = 162611311896. Its totient is φ = 159422854600.

The previous prime is 161017083221. The next prime is 161017083281. The reversal of 161017083247 is 742380710161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161017083247 - 2¹⁹ = 161016558959 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 (161017083047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797114173 + ... + 797114374.

It is an arithmetic number, because the mean of its divisors is an integer number (40652827974).

Almost surely, 2^161017083247 is an apocalyptic number.

161017083247 is a deficient number, since it is larger than the sum of its proper divisors (1594228649).

161017083247 is a wasteful number, since it uses less digits than its factorization.

161017083247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594228648.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 161017083247 in words is "one hundred sixty-one billion, seventeen million, eighty-three thousand, two hundred forty-seven".