2145341321312 has 96 divisors (see below), whose sum is σ = 4988583419904. Its totient is φ = 888727334400.

The previous prime is 2145341321309. The next prime is 2145341321341. The reversal of 2145341321312 is 2131231435412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5742137 + ... + 6104327.

It is an arithmetic number, because the mean of its divisors is an integer number (51964410624).

Almost surely, 2^{2145341321312} 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 2145341321312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494291709952).

2145341321312 is an abundant number, since it is smaller than the sum of its proper divisors (2843242098592).

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

2145341321312 is a wasteful number, since it uses less digits than its factorization.

2145341321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363092 (or 363084 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

Adding to 2145341321312 its reverse (2131231435412), we get a palindrome (4276572756724).

The spelling of 2145341321312 in words is "two trillion, one hundred forty-five billion, three hundred forty-one million, three hundred twenty-one thousand, three hundred twelve".