216404132026 has 8 divisors (see below), whose sum is σ = 324633125664. Its totient is φ = 108193090140.

The previous prime is 216404132023. The next prime is 216404132041. The reversal of 216404132026 is 620231404612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (216404132023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4457760 + ... + 4506043.

It is an arithmetic number, because the mean of its divisors is an integer number (40579140708).

Almost surely, 2^216404132026 is an apocalyptic number.

216404132026 is a deficient number, since it is larger than the sum of its proper divisors (108228993638).

216404132026 is a wasteful number, since it uses less digits than its factorization.

216404132026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975876.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 216404132026 its reverse (620231404612), we get a palindrome (836635536638).

The spelling of 216404132026 in words is "two hundred sixteen billion, four hundred four million, one hundred thirty-two thousand, twenty-six".