161527888992527 has 4 divisors (see below), whose sum is σ = 161531725710456. Its totient is φ = 161524052274600.

The previous prime is 161527888992469. The next prime is 161527888992539. The reversal of 161527888992527 is 725299888725161.

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 161527888992527 - 2⁸ = 161527888992271 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 (161527888992557) 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 3 ways as a sum of consecutive naturals, for example, 1918295813 + ... + 1918380014.

It is an arithmetic number, because the mean of its divisors is an integer number (40382931427614).

Almost surely, 2^{161527888992527} is an apocalyptic number.

161527888992527 is a deficient number, since it is larger than the sum of its proper divisors (3836717929).

161527888992527 is an equidigital number, since it uses as much as digits as its factorization.

161527888992527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836717928.

The product of its digits is 2438553600, while the sum is 80.

The spelling of 161527888992527 in words is "one hundred sixty-one trillion, five hundred twenty-seven billion, eight hundred eighty-eight million, nine hundred ninety-two thousand, five hundred twenty-seven".