29168882521 has 9 divisors (see below), whose sum is σ = 29334628029. Its totient is φ = 29004071136.

The previous prime is 29168882503. The next prime is 29168882527. The reversal of 29168882521 is 12528886192.

The square root of 29168882521 is 170789.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2879502921 + 26289379600 = 53661^2 + 162140^2 .

It is not a de Polignac number, because 29168882521 - 2¹⁷ = 29168751449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29168882527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39793471 + ... + 39794203.

Almost surely, 2^29168882521 is an apocalyptic number.

29168882521 is the 170789-th square number.

29168882521 is the 85395-th centered octagonal number.

It is an amenable number.

29168882521 is a deficient number, since it is larger than the sum of its proper divisors (165745508).

29168882521 is an frugal number, since it uses more digits than its factorization.

29168882521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932 (or 966 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 52.

The spelling of 29168882521 in words is "twenty-nine billion, one hundred sixty-eight million, eight hundred eighty-two thousand, five hundred twenty-one".