161212603305332 has 12 divisors (see below), whose sum is σ = 282122709056580. Its totient is φ = 80606115003456.

The previous prime is 161212603305317. The next prime is 161212603305371. The reversal of 161212603305332 is 233503306212161.

It can be written as a sum of positive squares in 2 ways, for example, as 127262450096356 + 33950153208976 = 11281066^2 + 5826676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44709857 + ... + 48180872.

It is an arithmetic number, because the mean of its divisors is an integer number (23510225754715).

Almost surely, 2^{161212603305332} is an apocalyptic number.

It is an amenable number.

161212603305332 is a deficient number, since it is larger than the sum of its proper divisors (120910105751248).

161212603305332 is a wasteful number, since it uses less digits than its factorization.

161212603305332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93324610 (or 93324608 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

Adding to 161212603305332 its reverse (233503306212161), we get a palindrome (394715909517493).

The spelling of 161212603305332 in words is "one hundred sixty-one trillion, two hundred twelve billion, six hundred three million, three hundred five thousand, three hundred thirty-two".