409069678813 has 2 divisors, whose sum is σ = 409069678814. Its totient is φ = 409069678812.

The previous prime is 409069678769. The next prime is 409069678819. The reversal of 409069678813 is 318876960904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391729529689 + 17340149124 = 625883^2 + 131682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409069678813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409069678819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204534839406 + 204534839407.

It is an arithmetic number, because the mean of its divisors is an integer number (204534839407).

Almost surely, 2^409069678813 is an apocalyptic number.

It is an amenable number.

409069678813 is a deficient number, since it is larger than the sum of its proper divisors (1).

409069678813 is an equidigital number, since it uses as much as digits as its factorization.

409069678813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 409069678813 in words is "four hundred nine billion, sixty-nine million, six hundred seventy-eight thousand, eight hundred thirteen".