321116783680 has 112 divisors (see below), whose sum is σ = 953341589376. Its totient is φ = 100088340480.

The previous prime is 321116783677. The next prime is 321116783683. The reversal of 321116783680 is 86387611123.

It is an interprime number because it is at equal distance from previous prime (321116783677) and next prime (321116783683).

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 321116783680.

It is not an unprimeable number, because it can be changed into a prime (321116783683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6491529 + ... + 6540808.

Almost surely, 2^321116783680 is an apocalyptic number.

It is an amenable number.

321116783680 is an abundant number, since it is smaller than the sum of its proper divisors (632224805696).

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

321116783680 is a wasteful number, since it uses less digits than its factorization.

321116783680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032372 (or 13032362 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 321116783680 in words is "three hundred twenty-one billion, one hundred sixteen million, seven hundred eighty-three thousand, six hundred eighty".