216839629093 has 4 divisors (see below), whose sum is σ = 219893708448. Its totient is φ = 213785549740.

The previous prime is 216839629087. The next prime is 216839629133. The reversal of 216839629093 is 390926938612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216839629093 - 2⁹ = 216839628581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216839629073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527039571 + ... + 1527039712.

It is an arithmetic number, because the mean of its divisors is an integer number (54973427112).

Almost surely, 2^216839629093 is an apocalyptic number.

It is an amenable number.

216839629093 is a deficient number, since it is larger than the sum of its proper divisors (3054079355).

216839629093 is an equidigital number, since it uses as much as digits as its factorization.

216839629093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054079354.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 216839629093 in words is "two hundred sixteen billion, eight hundred thirty-nine million, six hundred twenty-nine thousand, ninety-three".