29987872055 has 8 divisors (see below), whose sum is σ = 36102664752. Its totient is φ = 23912152128.

The previous prime is 29987872051. The next prime is 29987872069. The reversal of 29987872055 is 55027878992.

It is a happy number.

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 29987872055 - 2² = 29987872051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29987872051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9766502 + ... + 9769571.

It is an arithmetic number, because the mean of its divisors is an integer number (4512833094).

Almost surely, 2^29987872055 is an apocalyptic number.

29987872055 is a deficient number, since it is larger than the sum of its proper divisors (6114792697).

29987872055 is a wasteful number, since it uses less digits than its factorization.

29987872055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19536385.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The spelling of 29987872055 in words is "twenty-nine billion, nine hundred eighty-seven million, eight hundred seventy-two thousand, fifty-five".