1377513961919 has 2 divisors, whose sum is σ = 1377513961920. Its totient is φ = 1377513961918.

The previous prime is 1377513961909. The next prime is 1377513961921. The reversal of 1377513961919 is 9191693157731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1377513961919 - 2¹² = 1377513957823 is a prime.

It is a super-2 number, since 2×1377513961919² (a number of 25 digits) contains 22 as substring.

Together with 1377513961921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377513961909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688756980959 + 688756980960.

It is an arithmetic number, because the mean of its divisors is an integer number (688756980960).

Almost surely, 2^{1377513961919} is an apocalyptic number.

1377513961919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377513961919 is an equidigital number, since it uses as much as digits as its factorization.

1377513961919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9644670, while the sum is 62.

The spelling of 1377513961919 in words is "one trillion, three hundred seventy-seven billion, five hundred thirteen million, nine hundred sixty-one thousand, nine hundred nineteen".