216451134210 has 32 divisors (see below), whose sum is σ = 521142433920. Its totient is φ = 57535890048.

The previous prime is 216451134209. The next prime is 216451134241. The reversal of 216451134210 is 12431154612.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 11516230 + ... + 11535009.

It is an arithmetic number, because the mean of its divisors is an integer number (16285701060).

Almost surely, 2^216451134210 is an apocalyptic number.

216451134210 is an abundant number, since it is smaller than the sum of its proper divisors (304691299710).

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

216451134210 is a wasteful number, since it uses less digits than its factorization.

216451134210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23051562.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 216451134210 its reverse (12431154612), we get a palindrome (228882288822).

The spelling of 216451134210 in words is "two hundred sixteen billion, four hundred fifty-one million, one hundred thirty-four thousand, two hundred ten".