216161357 has 8 divisors (see below), whose sum is σ = 223334400. Its totient is φ = 209000880.

The previous prime is 216161353. The next prime is 216161371. The reversal of 216161357 is 753161612.

216161357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 216161357 - 2² = 216161353 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 (216161353) 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, 42644 + ... + 47442.

It is an arithmetic number, because the mean of its divisors is an integer number (27916800).

Almost surely, 2^216161357 is an apocalyptic number.

It is an amenable number.

216161357 is a deficient number, since it is larger than the sum of its proper divisors (7173043).

216161357 is a wasteful number, since it uses less digits than its factorization.

216161357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283.

The product of its digits is 7560, while the sum is 32.

The square root of 216161357 is about 14702.4269085073. The cubic root of 216161357 is about 600.1493674422.

The spelling of 216161357 in words is "two hundred sixteen million, one hundred sixty-one thousand, three hundred fifty-seven".