1351330777987 has 2 divisors, whose sum is σ = 1351330777988. Its totient is φ = 1351330777986.

The previous prime is 1351330777967. The next prime is 1351330778117. The reversal of 1351330777987 is 7897770331531.

It is a weak prime.

It is an emirp because it is prime and its reverse (7897770331531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1351330777987 - 2¹⁹ = 1351330253699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351330777967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675665388993 + 675665388994.

It is an arithmetic number, because the mean of its divisors is an integer number (675665388994).

Almost surely, 2^{1351330777987} is an apocalyptic number.

1351330777987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351330777987 is an equidigital number, since it uses as much as digits as its factorization.

1351330777987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23337720, while the sum is 61.

The spelling of 1351330777987 in words is "one trillion, three hundred fifty-one billion, three hundred thirty million, seven hundred seventy-seven thousand, nine hundred eighty-seven".