13405066387 has 2 divisors, whose sum is σ = 13405066388. Its totient is φ = 13405066386.

The previous prime is 13405066369. The next prime is 13405066391. The reversal of 13405066387 is 78366050431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13405066387 - 2¹¹ = 13405064339 is a prime.

It is not a weakly prime, because it can be changed into another prime (13405066327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702533193 + 6702533194.

It is an arithmetic number, because the mean of its divisors is an integer number (6702533194).

Almost surely, 2^13405066387 is an apocalyptic number.

13405066387 is a deficient number, since it is larger than the sum of its proper divisors (1).

13405066387 is an equidigital number, since it uses as much as digits as its factorization.

13405066387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 13405066387 in words is "thirteen billion, four hundred five million, sixty-six thousand, three hundred eighty-seven".