3640624213817 has 2 divisors, whose sum is σ = 3640624213818. Its totient is φ = 3640624213816.

The previous prime is 3640624213717. The next prime is 3640624213819. The reversal of 3640624213817 is 7183124260463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2480826604096 + 1159797609721 = 1575064^2 + 1076939^2 .

It is a cyclic number.

It is not a de Polignac number, because 3640624213817 - 2¹² = 3640624209721 is a prime.

Together with 3640624213819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3640624213819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820312106908 + 1820312106909.

It is an arithmetic number, because the mean of its divisors is an integer number (1820312106909).

Almost surely, 2^{3640624213817} is an apocalyptic number.

It is an amenable number.

3640624213817 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640624213817 is an equidigital number, since it uses as much as digits as its factorization.

3640624213817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 3640624213817 in words is "three trillion, six hundred forty billion, six hundred twenty-four million, two hundred thirteen thousand, eight hundred seventeen".