216125043886640 has 60 divisors (see below), whose sum is σ = 584530029420336. Its totient is φ = 74100015045504.

The previous prime is 216125043886613. The next prime is 216125043886667. The reversal of 216125043886640 is 46688340521612.

It is an interprime number because it is at equal distance from previous prime (216125043886613) and next prime (216125043886667).

It is a Harshad number since it is a multiple of its sum of digits (56).

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 11 ways as a sum of consecutive naturals, for example, 27566965964 + ... + 27566973803.

Almost surely, 2^{216125043886640} is an apocalyptic number.

216125043886640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216125043886640 is an abundant number, since it is smaller than the sum of its proper divisors (368404985533696).

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

216125043886640 is a wasteful number, since it uses less digits than its factorization.

216125043886640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55133939794 (or 55133939781 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 216125043886640 in words is "two hundred sixteen trillion, one hundred twenty-five billion, forty-three million, eight hundred eighty-six thousand, six hundred forty".