216526726912 has 18 divisors (see below), whose sum is σ = 432207646808. Its totient is φ = 108263363328.

The previous prime is 216526726903. The next prime is 216526726963. The reversal of 216526726912 is 219627625612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422903508 + ... + 422904019.

Almost surely, 2^216526726912 is an apocalyptic number.

It is an amenable number.

216526726912 is a deficient number, since it is larger than the sum of its proper divisors (215680919896).

216526726912 is an frugal number, since it uses more digits than its factorization.

216526726912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845807543 (or 845807529 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The spelling of 216526726912 in words is "two hundred sixteen billion, five hundred twenty-six million, seven hundred twenty-six thousand, nine hundred twelve".