161513352233 has 8 divisors (see below), whose sum is σ = 162851146752. Its totient is φ = 160176589776.

The previous prime is 161513352127. The next prime is 161513352311. The reversal of 161513352233 is 332253315161.

It is a happy number.

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 161513352233 - 2³² = 157218384937 is a prime.

It is a super-2 number, since 2×161513352233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161513352193 and 161513352202.

It is not an unprimeable number, because it can be changed into a prime (161510352233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57866 + ... + 571292.

It is an arithmetic number, because the mean of its divisors is an integer number (20356393344).

Almost surely, 2^161513352233 is an apocalyptic number.

It is an amenable number.

161513352233 is a deficient number, since it is larger than the sum of its proper divisors (1337794519).

161513352233 is a wasteful number, since it uses less digits than its factorization.

161513352233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516031.

The product of its digits is 48600, while the sum is 35.

Adding to 161513352233 its reverse (332253315161), we get a palindrome (493766667394).

The spelling of 161513352233 in words is "one hundred sixty-one billion, five hundred thirteen million, three hundred fifty-two thousand, two hundred thirty-three".