216671517052 has 12 divisors (see below), whose sum is σ = 401479575840. Its totient is φ = 101963066816.

The previous prime is 216671516993. The next prime is 216671517053. The reversal of 216671517052 is 250715176612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216671517053) 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, 1593172852 + ... + 1593172987.

It is an arithmetic number, because the mean of its divisors is an integer number (33456631320).

Almost surely, 2^216671517052 is an apocalyptic number.

It is an amenable number.

216671517052 is a deficient number, since it is larger than the sum of its proper divisors (184808058788).

216671517052 is a wasteful number, since it uses less digits than its factorization.

216671517052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186345860 (or 3186345858 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 216671517052 in words is "two hundred sixteen billion, six hundred seventy-one million, five hundred seventeen thousand, fifty-two".