29107430881 has 3 divisors (see below), whose sum is σ = 29107601491. Its totient is φ = 29107260272.

The previous prime is 29107430867. The next prime is 29107430917. The reversal of 29107430881 is 18803470192.

The square root of 29107430881 is 170609.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 22317670881 + 6789760000 = 149391^2 + 82400^2 .

It is not a de Polignac number, because 29107430881 - 2²¹ = 29105333729 is a prime.

It is a super-2 number, since 2×29107430881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29107430851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 85305 + ... + 255913.

Almost surely, 2^29107430881 is an apocalyptic number.

29107430881 is the 170609-th square number.

29107430881 is the 85305-th centered octagonal number.

It is an amenable number.

29107430881 is a deficient number, since it is larger than the sum of its proper divisors (170610).

29107430881 is an frugal number, since it uses more digits than its factorization.

29107430881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341218 (or 170609 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 29107430881 in words is "twenty-nine billion, one hundred seven million, four hundred thirty thousand, eight hundred eighty-one".