881518248879129 has 9 divisors (see below), whose sum is σ = 1273304265928149. Its totient is φ = 587678773205340.

The previous prime is 881518248879089. The next prime is 881518248879137. The reversal of 881518248879129 is 921978842815188.

The square root of 881518248879129 is 29690373.

It is a perfect power (a square), and thus also a powerful number.

881518248879129 is a `hidden beast` number, since 8 + 8 + 1 + 5 + 1 + 8 + 2 + 488 + 7 + 9 + 129 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-881518248879129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (881518248879199) 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 8 ways as a sum of consecutive naturals, for example, 84122724 + ... + 94019514.

Almost surely, 2^{881518248879129} is an apocalyptic number.

881518248879129 is the 29690373-rd square number.

881518248879129 is the 14845187-th centered octagonal number.

It is an amenable number.

881518248879129 is a deficient number, since it is larger than the sum of its proper divisors (391786017049020).

881518248879129 is an frugal number, since it uses more digits than its factorization.

881518248879129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19793588 (or 9896794 counting only the distinct ones).

The product of its digits is 1486356480, while the sum is 81.

The spelling of 881518248879129 in words is "eight hundred eighty-one trillion, five hundred eighteen billion, two hundred forty-eight million, eight hundred seventy-nine thousand, one hundred twenty-nine".