12815340341887 has 2 divisors, whose sum is σ = 12815340341888. Its totient is φ = 12815340341886.

The previous prime is 12815340341819. The next prime is 12815340341977. The reversal of 12815340341887 is 78814304351821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12815340341887 - 2⁷ = 12815340341759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12815340341087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6407670170943 + 6407670170944.

It is an arithmetic number, because the mean of its divisors is an integer number (6407670170944).

Almost surely, 2^{12815340341887} is an apocalyptic number.

12815340341887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12815340341887 is an equidigital number, since it uses as much as digits as its factorization.

12815340341887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 12815340341887 in words is "twelve trillion, eight hundred fifteen billion, three hundred forty million, three hundred forty-one thousand, eight hundred eighty-seven".