216156395 has 24 divisors (see below), whose sum is σ = 324951984. Its totient is φ = 136817856.

The previous prime is 216156389. The next prime is 216156427. The reversal of 216156395 is 593651612.

216156395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216156395 - 2⁴ = 216156379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30749 + ... + 37118.

It is an arithmetic number, because the mean of its divisors is an integer number (13539666).

Almost surely, 2^216156395 is an apocalyptic number.

216156395 is a deficient number, since it is larger than the sum of its proper divisors (108795589).

216156395 is a wasteful number, since it uses less digits than its factorization.

216156395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67899 (or 67892 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 216156395 is about 14702.2581598882. The cubic root of 216156395 is about 600.1447752493.

The spelling of 216156395 in words is "two hundred sixteen million, one hundred fifty-six thousand, three hundred ninety-five".