1371493637687 has 2 divisors, whose sum is σ = 1371493637688. Its totient is φ = 1371493637686.

The previous prime is 1371493637659. The next prime is 1371493637737. The reversal of 1371493637687 is 7867363941731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1371493637687 - 2¹⁸ = 1371493375543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371493636687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685746818843 + 685746818844.

It is an arithmetic number, because the mean of its divisors is an integer number (685746818844).

Almost surely, 2^{1371493637687} is an apocalyptic number.

1371493637687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371493637687 is an equidigital number, since it uses as much as digits as its factorization.

1371493637687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 65.

The spelling of 1371493637687 in words is "one trillion, three hundred seventy-one billion, four hundred ninety-three million, six hundred thirty-seven thousand, six hundred eighty-seven".