1377921694459 has 2 divisors, whose sum is σ = 1377921694460. Its totient is φ = 1377921694458.

The previous prime is 1377921694451. The next prime is 1377921694483. The reversal of 1377921694459 is 9544961297731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1377921694459 - 2³ = 1377921694451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377921694394 and 1377921694403.

It is not a weakly prime, because it can be changed into another prime (1377921694451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688960847229 + 688960847230.

It is an arithmetic number, because the mean of its divisors is an integer number (688960847230).

Almost surely, 2^{1377921694459} is an apocalyptic number.

1377921694459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377921694459 is an equidigital number, since it uses as much as digits as its factorization.

1377921694459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 67.

The spelling of 1377921694459 in words is "one trillion, three hundred seventy-seven billion, nine hundred twenty-one million, six hundred ninety-four thousand, four hundred fifty-nine".