216087129829 has 8 divisors (see below), whose sum is σ = 233666183808. Its totient is φ = 199048969920.

The previous prime is 216087129787. The next prime is 216087129847. The reversal of 216087129829 is 928921780612.

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

It is a cyclic number.

It is not a de Polignac number, because 216087129829 - 2¹³ = 216087121637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216087129829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216087129899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135222687 + ... + 135224284.

It is an arithmetic number, because the mean of its divisors is an integer number (29208272976).

Almost surely, 2^216087129829 is an apocalyptic number.

It is an amenable number.

216087129829 is a deficient number, since it is larger than the sum of its proper divisors (17579053979).

216087129829 is a wasteful number, since it uses less digits than its factorization.

216087129829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270447035.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 216087129829 in words is "two hundred sixteen billion, eighty-seven million, one hundred twenty-nine thousand, eight hundred twenty-nine".