2321306343664 has 160 divisors (see below), whose sum is σ = 5871098225664. Its totient is φ = 862127523840.

The previous prime is 2321306343617. The next prime is 2321306343667. The reversal of 2321306343664 is 4663436031232.

It is a super-2 number, since 2×2321306343664² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2321306343664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321306343667) 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, 8162652 + ... + 8442244.

Almost surely, 2^{2321306343664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2321306343664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2935549112832).

2321306343664 is an abundant number, since it is smaller than the sum of its proper divisors (3549791882000).

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

2321306343664 is a wasteful number, since it uses less digits than its factorization.

2321306343664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279935 (or 279929 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 43.

The spelling of 2321306343664 in words is "two trillion, three hundred twenty-one billion, three hundred six million, three hundred forty-three thousand, six hundred sixty-four".