29980619686 has 8 divisors (see below), whose sum is σ = 44971899984. Its totient is φ = 14989986360.

The previous prime is 29980619681. The next prime is 29980619687. The reversal of 29980619686 is 68691608992.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29980619681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21610 + ... + 245821.

It is an arithmetic number, because the mean of its divisors is an integer number (5621487498).

Almost surely, 2^29980619686 is an apocalyptic number.

29980619686 is a deficient number, since it is larger than the sum of its proper divisors (14991280298).

29980619686 is a wasteful number, since it uses less digits than its factorization.

29980619686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323486.

The product of its (nonzero) digits is 20155392, while the sum is 64.

The spelling of 29980619686 in words is "twenty-nine billion, nine hundred eighty million, six hundred nineteen thousand, six hundred eighty-six".