1678817704142 has 8 divisors (see below), whose sum is σ = 2518369034832. Its totient is φ = 839361359200.

The previous prime is 1678817704103. The next prime is 1678817704147. The reversal of 1678817704142 is 2414077188761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678817704147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23702234 + ... + 23772957.

It is an arithmetic number, because the mean of its divisors is an integer number (314796129354).

Almost surely, 2^{1678817704142} is an apocalyptic number.

1678817704142 is a deficient number, since it is larger than the sum of its proper divisors (839551330690).

1678817704142 is a wasteful number, since it uses less digits than its factorization.

1678817704142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47492874.

The product of its (nonzero) digits is 4214784, while the sum is 56.

The spelling of 1678817704142 in words is "one trillion, six hundred seventy-eight billion, eight hundred seventeen million, seven hundred four thousand, one hundred forty-two".