29169063981 has 40 divisors (see below), whose sum is σ = 46228442040. Its totient is φ = 18265761792.

The previous prime is 29169063971. The next prime is 29169063983. The reversal of 29169063981 is 18936096192.

It can be written as a sum of positive squares in 4 ways, for example, as 23107040100 + 6062023881 = 152010^2 + 77859^2 .

It is not a de Polignac number, because 29169063981 - 2⁵ = 29169063949 is a prime.

It is a super-2 number, since 2×29169063981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29169063983) 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 39 ways as a sum of consecutive naturals, for example, 680085 + ... + 721701.

It is an arithmetic number, because the mean of its divisors is an integer number (1155711051).

Almost surely, 2^29169063981 is an apocalyptic number.

It is an amenable number.

29169063981 is a deficient number, since it is larger than the sum of its proper divisors (17059378059).

29169063981 is a wasteful number, since it uses less digits than its factorization.

29169063981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42155 (or 42146 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 29169063981 in words is "twenty-nine billion, one hundred sixty-nine million, sixty-three thousand, nine hundred eighty-one".