1381377763387 has 2 divisors, whose sum is σ = 1381377763388. Its totient is φ = 1381377763386.

The previous prime is 1381377763351. The next prime is 1381377763393. The reversal of 1381377763387 is 7833677731831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1381377763387 - 2²⁷ = 1381243545659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381377763397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690688881693 + 690688881694.

It is an arithmetic number, because the mean of its divisors is an integer number (690688881694).

Almost surely, 2^{1381377763387} is an apocalyptic number.

1381377763387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381377763387 is an equidigital number, since it uses as much as digits as its factorization.

1381377763387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74680704, while the sum is 64.

The spelling of 1381377763387 in words is "one trillion, three hundred eighty-one billion, three hundred seventy-seven million, seven hundred sixty-three thousand, three hundred eighty-seven".