3679561639513 has 2 divisors, whose sum is σ = 3679561639514. Its totient is φ = 3679561639512.

The previous prime is 3679561639489. The next prime is 3679561639519. The reversal of 3679561639513 is 3159361659763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1983920139289 + 1695641500224 = 1408517^2 + 1302168^2 .

It is an emirp because it is prime and its reverse (3159361659763) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3679561639513 is a prime.

It is not a weakly prime, because it can be changed into another prime (3679561639519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1839780819756 + 1839780819757.

It is an arithmetic number, because the mean of its divisors is an integer number (1839780819757).

Almost surely, 2^{3679561639513} is an apocalyptic number.

It is an amenable number.

3679561639513 is a deficient number, since it is larger than the sum of its proper divisors (1).

3679561639513 is an equidigital number, since it uses as much as digits as its factorization.

3679561639513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82668600, while the sum is 64.

The spelling of 3679561639513 in words is "three trillion, six hundred seventy-nine billion, five hundred sixty-one million, six hundred thirty-nine thousand, five hundred thirteen".