216934647804 has 36 divisors (see below), whose sum is σ = 626700094384. Its totient is φ = 61981327872.

The previous prime is 216934647803. The next prime is 216934647833. The reversal of 216934647804 is 408746439612.

216934647804 is a `hidden beast` number, since 2 + 16 + 93 + 464 + 7 + 80 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216934647803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430425637 + ... + 430426140.

Almost surely, 2^216934647804 is an apocalyptic number.

It is an amenable number.

216934647804 is an abundant number, since it is smaller than the sum of its proper divisors (409765446580).

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

216934647804 is a wasteful number, since it uses less digits than its factorization.

216934647804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860851794 (or 860851789 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 216934647804 in words is "two hundred sixteen billion, nine hundred thirty-four million, six hundred forty-seven thousand, eight hundred four".