3478438864513 has 2 divisors, whose sum is σ = 3478438864514. Its totient is φ = 3478438864512.

The previous prime is 3478438864477. The next prime is 3478438864519. The reversal of 3478438864513 is 3154688348743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3221138331009 + 257300533504 = 1794753^2 + 507248^2 .

It is an emirp because it is prime and its reverse (3154688348743) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3478438864513 is a prime.

It is not a weakly prime, because it can be changed into another prime (3478438864519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1739219432256 + 1739219432257.

It is an arithmetic number, because the mean of its divisors is an integer number (1739219432257).

Almost surely, 2^{3478438864513} is an apocalyptic number.

It is an amenable number.

3478438864513 is a deficient number, since it is larger than the sum of its proper divisors (1).

3478438864513 is an equidigital number, since it uses as much as digits as its factorization.

3478438864513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185794560, while the sum is 64.

The spelling of 3478438864513 in words is "three trillion, four hundred seventy-eight billion, four hundred thirty-eight million, eight hundred sixty-four thousand, five hundred thirteen".