2643307256513 has 64 divisors (see below), whose sum is σ = 3416898816000. Its totient is φ = 1985293340160.

The previous prime is 2643307256509. The next prime is 2643307256519. The reversal of 2643307256513 is 3156527033462.

It is a cyclic number.

It is not a de Polignac number, because 2643307256513 - 2² = 2643307256509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2643307256519) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 518394638 + ... + 518399736.

It is an arithmetic number, because the mean of its divisors is an integer number (53389044000).

Almost surely, 2^{2643307256513} is an apocalyptic number.

It is an amenable number.

2643307256513 is a deficient number, since it is larger than the sum of its proper divisors (773591559487).

2643307256513 is a wasteful number, since it uses less digits than its factorization.

2643307256513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382.

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 2643307256513 in words is "two trillion, six hundred forty-three billion, three hundred seven million, two hundred fifty-six thousand, five hundred thirteen".