216402682346 has 16 divisors (see below), whose sum is σ = 325747678464. Its totient is φ = 107820479424.

The previous prime is 216402682337. The next prime is 216402682373. The reversal of 216402682346 is 643286204612.

It is a happy number.

216402682346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216402682297 and 216402682306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140641 + ... + 1316763.

It is an arithmetic number, because the mean of its divisors is an integer number (20359229904).

Almost surely, 2^216402682346 is an apocalyptic number.

216402682346 is a deficient number, since it is larger than the sum of its proper divisors (109344996118).

216402682346 is a wasteful number, since it uses less digits than its factorization.

216402682346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178285.

The product of its (nonzero) digits is 663552, while the sum is 44.

Adding to 216402682346 its reverse (643286204612), we get a palindrome (859688886958).

The spelling of 216402682346 in words is "two hundred sixteen billion, four hundred two million, six hundred eighty-two thousand, three hundred forty-six".