321914112780 has 96 divisors (see below), whose sum is σ = 972316800000. Its totient is φ = 79107994368.

The previous prime is 321914112769. The next prime is 321914112797. The reversal of 321914112780 is 87211419123.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 31 ways as a sum of consecutive naturals, for example, 122721 + ... + 811719.

It is an arithmetic number, because the mean of its divisors is an integer number (10128300000).

Almost surely, 2^321914112780 is an apocalyptic number.

321914112780 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 321914112780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486158400000).

321914112780 is an abundant number, since it is smaller than the sum of its proper divisors (650402687220).

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

321914112780 is a wasteful number, since it uses less digits than its factorization.

321914112780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689623 (or 689621 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 321914112780 in words is "three hundred twenty-one billion, nine hundred fourteen million, one hundred twelve thousand, seven hundred eighty".