29080821961 has 9 divisors (see below), whose sum is σ = 30054637479. Its totient is φ = 28137615000.

The previous prime is 29080821941. The next prime is 29080821983. The reversal of 29080821961 is 16912808092.

The square root of 29080821961 is 170531.

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., 28554578361 + 526243600 = 168981^2 + 22940^2 .

It is not a de Polignac number, because 29080821961 - 2⁵ = 29080821929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29080821941) 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, 5283711 + ... + 5289211.

Almost surely, 2^29080821961 is an apocalyptic number.

29080821961 is the 170531-st square number.

29080821961 is the 85266-th centered octagonal number.

It is an amenable number.

29080821961 is a deficient number, since it is larger than the sum of its proper divisors (973815518).

29080821961 is an frugal number, since it uses more digits than its factorization.

29080821961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11064 (or 5532 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The spelling of 29080821961 in words is "twenty-nine billion, eighty million, eight hundred twenty-one thousand, nine hundred sixty-one".