89177029202881 has 9 divisors (see below), whose sum is σ = 91299559202019. Its totient is φ = 87102748181736.

The previous prime is 89177029202869. The next prime is 89177029202917. The reversal of 89177029202881 is 18820292077198.

The square root of 89177029202881 is 9443359.

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

It can be written as a sum of positive squares in only one way, i.e., 8092118962225 + 81084910240656 = 2844665^2 + 9004716^2 .

It is a de Polignac number, because none of the positive numbers 2^k-89177029202881 is a prime.

It is a super-2 number, since 2×89177029202881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89177029202831) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 405954631 + ... + 406174243.

It is an arithmetic number, because the mean of its divisors is an integer number (10144395466891).

Almost surely, 2^{89177029202881} is an apocalyptic number.

89177029202881 is the 9443359-th square number.

89177029202881 is the 4721680-th centered octagonal number.

It is an amenable number.

89177029202881 is a deficient number, since it is larger than the sum of its proper divisors (2122529999138).

89177029202881 is an frugal number, since it uses more digits than its factorization.

89177029202881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439312 (or 219656 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 64.

The spelling of 89177029202881 in words is "eighty-nine trillion, one hundred seventy-seven billion, twenty-nine million, two hundred two thousand, eight hundred eighty-one".