29512120018 has 8 divisors (see below), whose sum is σ = 44311883148. Its totient is φ = 14741492304.

The previous prime is 29512119977. The next prime is 29512120021. The reversal of 29512120018 is 81002121592.

It can be written as a sum of positive squares in 2 ways, for example, as 29139514209 + 372605809 = 170703^2 + 19303^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7281321 + ... + 7285372.

Almost surely, 2^29512120018 is an apocalyptic number.

29512120018 is a deficient number, since it is larger than the sum of its proper divisors (14799763130).

29512120018 is a wasteful number, since it uses less digits than its factorization.

29512120018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567708.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 29512120018 in words is "twenty-nine billion, five hundred twelve million, one hundred twenty thousand, eighteen".