216015628538 has 8 divisors (see below), whose sum is σ = 325045599732. Its totient is φ = 107667095296.

The previous prime is 216015628523. The next prime is 216015628561. The reversal of 216015628538 is 835826510612.

216015628538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 202727764009 + 13287864529 = 450253^2 + 115273^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 216015628492 and 216015628501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170358695 + ... + 170359962.

Almost surely, 2^216015628538 is an apocalyptic number.

216015628538 is a deficient number, since it is larger than the sum of its proper divisors (109029971194).

216015628538 is a wasteful number, since it uses less digits than its factorization.

216015628538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340718976.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 216015628538 in words is "two hundred sixteen billion, fifteen million, six hundred twenty-eight thousand, five hundred thirty-eight".