216219540128 has 96 divisors (see below), whose sum is σ = 435281817600. Its totient is φ = 105706266624.

The previous prime is 216219540113. The next prime is 216219540137. The reversal of 216219540128 is 821045912612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106040933 + ... + 106042971.

It is an arithmetic number, because the mean of its divisors is an integer number (4534185600).

Almost surely, 2^216219540128 is an apocalyptic number.

It is an amenable number.

216219540128 is an abundant number, since it is smaller than the sum of its proper divisors (219062277472).

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

216219540128 is a wasteful number, since it uses less digits than its factorization.

216219540128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542 (or 2534 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 216219540128 in words is "two hundred sixteen billion, two hundred nineteen million, five hundred forty thousand, one hundred twenty-eight".