29994128180261 has 8 divisors (see below), whose sum is σ = 34279305021504. Its totient is φ = 25709026685760.

The previous prime is 29994128180161. The next prime is 29994128180293. The reversal of 29994128180261 is 16208182149992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29994128180261 - 2³⁰ = 29993054438437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 29994128180194 and 29994128180203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29994128180161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17981060 + ... + 19578221.

It is an arithmetic number, because the mean of its divisors is an integer number (4284913127688).

Almost surely, 2^{29994128180261} is an apocalyptic number.

It is an amenable number.

29994128180261 is a deficient number, since it is larger than the sum of its proper divisors (4285176841243).

29994128180261 is a wasteful number, since it uses less digits than its factorization.

29994128180261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37673371.

The product of its (nonzero) digits is 8957952, while the sum is 62.

The spelling of 29994128180261 in words is "twenty-nine trillion, nine hundred ninety-four billion, one hundred twenty-eight million, one hundred eighty thousand, two hundred sixty-one".