29999999999987 has 2 divisors, whose sum is σ = 29999999999988. Its totient is φ = 29999999999986.

The previous prime is 29999999999927. The next prime is 30000000000011. The reversal of 29999999999987 is 78999999999992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29999999999987 - 2²⁰ = 29999998951411 is a prime.

It is not a weakly prime, because it can be changed into another prime (29999999999927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14999999999993 + 14999999999994.

It is an arithmetic number, because the mean of its divisors is an integer number (14999999999994).

Almost surely, 2^{29999999999987} is an apocalyptic number.

29999999999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

29999999999987 is an equidigital number, since it uses as much as digits as its factorization.

29999999999987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3514678676208, while the sum is 116.

The spelling of 29999999999987 in words is "twenty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-seven".