321116401860 has 96 divisors (see below), whose sum is σ = 912023156352. Its totient is φ = 84404229120.

The previous prime is 321116401721. The next prime is 321116401867. The reversal of 321116401860 is 68104611123.

It is a super-2 number, since 2×321116401860² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321116401867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7103730 + ... + 7148790.

It is an arithmetic number, because the mean of its divisors is an integer number (9500241212).

Almost surely, 2^321116401860 is an apocalyptic number.

321116401860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321116401860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456011578176).

321116401860 is an abundant number, since it is smaller than the sum of its proper divisors (590906754492).

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

321116401860 is a wasteful number, since it uses less digits than its factorization.

321116401860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46773 (or 46771 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 321116401860 in words is "three hundred twenty-one billion, one hundred sixteen million, four hundred one thousand, eight hundred sixty".