1377380387629 has 2 divisors, whose sum is σ = 1377380387630. Its totient is φ = 1377380387628.

The previous prime is 1377380387627. The next prime is 1377380387671. The reversal of 1377380387629 is 9267830837731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975136500100 + 402243887529 = 987490^2 + 634227^2 .

It is an emirp because it is prime and its reverse (9267830837731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1377380387629 - 2¹ = 1377380387627 is a prime.

Together with 1377380387627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377380387627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688690193814 + 688690193815.

It is an arithmetic number, because the mean of its divisors is an integer number (688690193815).

Almost surely, 2^{1377380387629} is an apocalyptic number.

It is an amenable number.

1377380387629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377380387629 is an equidigital number, since it uses as much as digits as its factorization.

1377380387629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 1377380387629 in words is "one trillion, three hundred seventy-seven billion, three hundred eighty million, three hundred eighty-seven thousand, six hundred twenty-nine".