216041491128 has 32 divisors (see below), whose sum is σ = 544226664960. Its totient is φ = 71464105440.

The previous prime is 216041491109. The next prime is 216041491189. The reversal of 216041491128 is 821194140612.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 34354600 + ... + 34360887.

It is an arithmetic number, because the mean of its divisors is an integer number (17007083280).

Almost surely, 2^216041491128 is an apocalyptic number.

It is an amenable number.

216041491128 is an abundant number, since it is smaller than the sum of its proper divisors (328185173832).

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

216041491128 is a wasteful number, since it uses less digits than its factorization.

216041491128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68715627 (or 68715623 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 216041491128 in words is "two hundred sixteen billion, forty-one million, four hundred ninety-one thousand, one hundred twenty-eight".