321440651243340 has 48 divisors (see below), whose sum is σ = 908772015959808. Its totient is φ = 84885298190784.

The previous prime is 321440651243339. The next prime is 321440651243353. The reversal of 321440651243340 is 43342156044123.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 321440651243292 and 321440651243301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26006519002 + ... + 26006531361.

It is an arithmetic number, because the mean of its divisors is an integer number (18932750332496).

Almost surely, 2^{321440651243340} is an apocalyptic number.

321440651243340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321440651243340 is an abundant number, since it is smaller than the sum of its proper divisors (587331364716468).

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

321440651243340 is a wasteful number, since it uses less digits than its factorization.

321440651243340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52013050478 (or 52013050476 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 321440651243340 in words is "three hundred twenty-one trillion, four hundred forty billion, six hundred fifty-one million, two hundred forty-three thousand, three hundred forty".