216722564276 has 12 divisors (see below), whose sum is σ = 379438557120. Its totient is φ = 108311547960.

The previous prime is 216722564249. The next prime is 216722564327. The reversal of 216722564276 is 672465227612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12423740 + ... + 12441171.

It is an arithmetic number, because the mean of its divisors is an integer number (31619879760).

Almost surely, 2^216722564276 is an apocalyptic number.

It is an amenable number.

216722564276 is a deficient number, since it is larger than the sum of its proper divisors (162715992844).

216722564276 is a wasteful number, since it uses less digits than its factorization.

216722564276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24867094 (or 24867092 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 50.

The spelling of 216722564276 in words is "two hundred sixteen billion, seven hundred twenty-two million, five hundred sixty-four thousand, two hundred seventy-six".