216071571672 has 96 divisors (see below), whose sum is σ = 644974883280. Its totient is φ = 64801198080.

The previous prime is 216071571637. The next prime is 216071571707. The reversal of 216071571672 is 276175170612.

216071571672 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 7 + 1 + 571 + 6 + 72 = 666.

216071571672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216071571637) and next prime (216071571707).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1329453 + ... + 1483100.

Almost surely, 2^216071571672 is an apocalyptic number.

216071571672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216071571672 is an abundant number, since it is smaller than the sum of its proper divisors (428903311608).

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

216071571672 is a wasteful number, since it uses less digits than its factorization.

216071571672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812673 (or 2812666 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The spelling of 216071571672 in words is "two hundred sixteen billion, seventy-one million, five hundred seventy-one thousand, six hundred seventy-two".