29668921187 has 2 divisors, whose sum is σ = 29668921188. Its totient is φ = 29668921186.

The previous prime is 29668921171. The next prime is 29668921213. The reversal of 29668921187 is 78112986692.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29668921187 - 2⁴ = 29668921171 is a prime.

It is not a weakly prime, because it can be changed into another prime (29668921487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14834460593 + 14834460594.

It is an arithmetic number, because the mean of its divisors is an integer number (14834460594).

Almost surely, 2^29668921187 is an apocalyptic number.

29668921187 is a deficient number, since it is larger than the sum of its proper divisors (1).

29668921187 is an equidigital number, since it uses as much as digits as its factorization.

29668921187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 59.

The spelling of 29668921187 in words is "twenty-nine billion, six hundred sixty-eight million, nine hundred twenty-one thousand, one hundred eighty-seven".