161525763271234 has 16 divisors (see below), whose sum is σ = 246865631967288. Its totient is φ = 79237287222912.

The previous prime is 161525763271199. The next prime is 161525763271237. The reversal of 161525763271234 is 432172367525161.

It can be written as a sum of positive squares in 4 ways, for example, as 151318217515609 + 10207545755625 = 12301147^2 + 3194925^2 .

It is not an unprimeable number, because it can be changed into a prime (161525763271237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12201507 + ... + 21723910.

Almost surely, 2^{161525763271234} is an apocalyptic number.

161525763271234 is a deficient number, since it is larger than the sum of its proper divisors (85339868696054).

161525763271234 is a wasteful number, since it uses less digits than its factorization.

161525763271234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33970389.

The product of its digits is 12700800, while the sum is 55.

The spelling of 161525763271234 in words is "one hundred sixty-one trillion, five hundred twenty-five billion, seven hundred sixty-three million, two hundred seventy-one thousand, two hundred thirty-four".