216436051 has 8 divisors (see below), whose sum is σ = 239385104. Its totient is φ = 194387040.

The previous prime is 216436009. The next prime is 216436091. The reversal of 216436051 is 150634612.

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 216436051 - 2⁹ = 216435539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216436091) 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, 224505 + ... + 225466.

It is an arithmetic number, because the mean of its divisors is an integer number (29923138).

Almost surely, 2^216436051 is an apocalyptic number.

216436051 is a deficient number, since it is larger than the sum of its proper divisors (22949053).

216436051 is a wasteful number, since it uses less digits than its factorization.

216436051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450021.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216436051 is about 14711.7657335889. The cubic root of 216436051 is about 600.4034795389.

The spelling of 216436051 in words is "two hundred sixteen million, four hundred thirty-six thousand, fifty-one".