1377445642687 has 2 divisors, whose sum is σ = 1377445642688. Its totient is φ = 1377445642686.

The previous prime is 1377445642619. The next prime is 1377445642693. The reversal of 1377445642687 is 7862465447731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1377445642687 - 2³⁵ = 1343085904319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377445642987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688722821343 + 688722821344.

It is an arithmetic number, because the mean of its divisors is an integer number (688722821344).

Almost surely, 2^{1377445642687} is an apocalyptic number.

1377445642687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377445642687 is an equidigital number, since it uses as much as digits as its factorization.

1377445642687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189665280, while the sum is 64.

The spelling of 1377445642687 in words is "one trillion, three hundred seventy-seven billion, four hundred forty-five million, six hundred forty-two thousand, six hundred eighty-seven".