161552712234 has 16 divisors (see below), whose sum is σ = 333528180480. Its totient is φ = 52113778080.

The previous prime is 161552712229. The next prime is 161552712247. The reversal of 161552712234 is 432217255161.

It is a super-2 number, since 2×161552712234² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161552712192 and 161552712201.

It is an unprimeable number.

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, 434281299 + ... + 434281670.

It is an arithmetic number, because the mean of its divisors is an integer number (20845511280).

Almost surely, 2^161552712234 is an apocalyptic number.

161552712234 is an abundant number, since it is smaller than the sum of its proper divisors (171975468246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161552712234 is a wasteful number, since it uses less digits than its factorization.

161552712234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868563005.

The product of its digits is 100800, while the sum is 39.

Adding to 161552712234 its reverse (432217255161), we get a palindrome (593769967395).

The spelling of 161552712234 in words is "one hundred sixty-one billion, five hundred fifty-two million, seven hundred twelve thousand, two hundred thirty-four".