216311125344 has 48 divisors (see below), whose sum is σ = 567888189120. Its totient is φ = 72094631040.

The previous prime is 216311125337. The next prime is 216311125379. The reversal of 216311125344 is 443521113612.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647439 + ... + 922929.

It is an arithmetic number, because the mean of its divisors is an integer number (11831003940).

Almost surely, 2^216311125344 is an apocalyptic number.

216311125344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216311125344 is an abundant number, since it is smaller than the sum of its proper divisors (351577063776).

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

216311125344 is a wasteful number, since it uses less digits than its factorization.

216311125344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283683 (or 283675 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

Adding to 216311125344 its reverse (443521113612), we get a palindrome (659832238956).

The spelling of 216311125344 in words is "two hundred sixteen billion, three hundred eleven million, one hundred twenty-five thousand, three hundred forty-four".