1378706169499 has 2 divisors, whose sum is σ = 1378706169500. Its totient is φ = 1378706169498.

The previous prime is 1378706169469. The next prime is 1378706169637. The reversal of 1378706169499 is 9949616078731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378706169499 - 2⁷ = 1378706169371 is a prime.

It is a super-2 number, since 2×1378706169499² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1378706169469) 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, 689353084749 + 689353084750.

It is an arithmetic number, because the mean of its divisors is an integer number (689353084750).

Almost surely, 2^{1378706169499} is an apocalyptic number.

1378706169499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378706169499 is an equidigital number, since it uses as much as digits as its factorization.

1378706169499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123451776, while the sum is 70.

The spelling of 1378706169499 in words is "one trillion, three hundred seventy-eight billion, seven hundred six million, one hundred sixty-nine thousand, four hundred ninety-nine".