216161610 has 32 divisors (see below), whose sum is σ = 592900992. Its totient is φ = 49408320.

The previous prime is 216161587. The next prime is 216161623. The reversal of 216161610 is 16161612.

216161610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514461 + ... + 514880.

It is an arithmetic number, because the mean of its divisors is an integer number (18528156).

Almost surely, 2^216161610 is an apocalyptic number.

216161610 is an abundant number, since it is smaller than the sum of its proper divisors (376739382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216161610 is a wasteful number, since it uses less digits than its factorization.

216161610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029358.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 216161610 is about 14702.4355125265. The cubic root of 216161610 is about 600.1496015847.

The spelling of 216161610 in words is "two hundred sixteen million, one hundred sixty-one thousand, six hundred ten".