29061981321 has 24 divisors (see below), whose sum is σ = 41258795904. Its totient is φ = 18192426240.

The previous prime is 29061981317. The next prime is 29061981329. The reversal of 29061981321 is 12318916092.

It is not a de Polignac number, because 29061981321 - 2² = 29061981317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29061981329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334791 + ... + 412563.

It is an arithmetic number, because the mean of its divisors is an integer number (1719116496).

Almost surely, 2^29061981321 is an apocalyptic number.

It is an amenable number.

29061981321 is a deficient number, since it is larger than the sum of its proper divisors (12196814583).

29061981321 is a wasteful number, since it uses less digits than its factorization.

29061981321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78241 (or 78224 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 29061981321 in words is "twenty-nine billion, sixty-one million, nine hundred eighty-one thousand, three hundred twenty-one".