2120256064345 has 8 divisors (see below), whose sum is σ = 2606363552520. Its totient is φ = 1654834001280.

The previous prime is 2120256064343. The next prime is 2120256064393. The reversal of 2120256064345 is 5434606520212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88696156761 + 2031559907584 = 297819^2 + 1425328^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120256064345 - 2¹ = 2120256064343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120256064298 and 2120256064307.

It is not an unprimeable number, because it can be changed into a prime (2120256064343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5171356050 + ... + 5171356459.

It is an arithmetic number, because the mean of its divisors is an integer number (325795444065).

Almost surely, 2^{2120256064345} is an apocalyptic number.

It is an amenable number.

2120256064345 is a deficient number, since it is larger than the sum of its proper divisors (486107488175).

2120256064345 is a wasteful number, since it uses less digits than its factorization.

2120256064345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10342712555.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 2120256064345 in words is "two trillion, one hundred twenty billion, two hundred fifty-six million, sixty-four thousand, three hundred forty-five".