216625835132544 has 64 divisors (see below), whose sum is σ = 575707308583680. Its totient is φ = 72171600384000.

The previous prime is 216625835132527. The next prime is 216625835132557. The reversal of 216625835132544 is 445231538526612.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 143825337 + ... + 145323704.

It is an arithmetic number, because the mean of its divisors is an integer number (8995426696620).

Almost surely, 2^{216625835132544} is an apocalyptic number.

216625835132544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216625835132544 is an abundant number, since it is smaller than the sum of its proper divisors (359081473451136).

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

216625835132544 is a wasteful number, since it uses less digits than its factorization.

216625835132544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289151009 (or 289150997 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 57.

The spelling of 216625835132544 in words is "two hundred sixteen trillion, six hundred twenty-five billion, eight hundred thirty-five million, one hundred thirty-two thousand, five hundred forty-four".