1678505677799 has 12 divisors (see below), whose sum is σ = 1762194532176. Its totient is φ = 1598425754688.

The previous prime is 1678505677789. The next prime is 1678505677837. The reversal of 1678505677799 is 9977765058761.

It is not a de Polignac number, because 1678505677799 - 2³⁶ = 1609786201063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678505677789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13608779 + ... + 13731564.

It is an arithmetic number, because the mean of its divisors is an integer number (146849544348).

Almost surely, 2^{1678505677799} is an apocalyptic number.

1678505677799 is a deficient number, since it is larger than the sum of its proper divisors (83688854377).

1678505677799 is an equidigital number, since it uses as much as digits as its factorization.

1678505677799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27340474 (or 27340445 counting only the distinct ones).

The product of its (nonzero) digits is 1400263200, while the sum is 77.

The spelling of 1678505677799 in words is "one trillion, six hundred seventy-eight billion, five hundred five million, six hundred seventy-seven thousand, seven hundred ninety-nine".