7638063505613 has 4 divisors (see below), whose sum is σ = 7638480881628. Its totient is φ = 7637646129600.

The previous prime is 7638063505609. The next prime is 7638063505661. The reversal of 7638063505613 is 3165053608367.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 264465404644 + 7373598100969 = 514262^2 + 2715437^2 .

It is a cyclic number.

It is not a de Polignac number, because 7638063505613 - 2² = 7638063505609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638063501613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208660556 + ... + 208697157.

It is an arithmetic number, because the mean of its divisors is an integer number (1909620220407).

Almost surely, 2^{7638063505613} is an apocalyptic number.

It is an amenable number.

7638063505613 is a deficient number, since it is larger than the sum of its proper divisors (417376015).

7638063505613 is a wasteful number, since it uses less digits than its factorization.

7638063505613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417376014.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 7638063505613 in words is "seven trillion, six hundred thirty-eight billion, sixty-three million, five hundred five thousand, six hundred thirteen".