29987734689 has 12 divisors (see below), whose sum is σ = 47253400272. Its totient is φ = 18174384600.

The previous prime is 29987734657. The next prime is 29987734717. The reversal of 29987734689 is 98643778992.

29987734689 is a `hidden beast` number, since 2 + 9 + 98 + 7 + 73 + 468 + 9 = 666.

It is not a de Polignac number, because 29987734689 - 2⁵ = 29987734657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29987734639) 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 11 ways as a sum of consecutive naturals, for example, 151453107 + ... + 151453304.

It is an arithmetic number, because the mean of its divisors is an integer number (3937783356).

Almost surely, 2^29987734689 is an apocalyptic number.

It is an amenable number.

29987734689 is a deficient number, since it is larger than the sum of its proper divisors (17265665583).

29987734689 is a wasteful number, since it uses less digits than its factorization.

29987734689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302906428 (or 302906425 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 72.

The spelling of 29987734689 in words is "twenty-nine billion, nine hundred eighty-seven million, seven hundred thirty-four thousand, six hundred eighty-nine".