1678498578085 has 8 divisors (see below), whose sum is σ = 2301940907136. Its totient is φ = 1150970453520.

The previous prime is 1678498578083. The next prime is 1678498578091. The reversal of 1678498578085 is 5808758948761.

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

It is not a de Polignac number, because 1678498578085 - 2¹ = 1678498578083 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 (1678498578083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23978551081 + ... + 23978551150.

It is an arithmetic number, because the mean of its divisors is an integer number (287742613392).

Almost surely, 2^{1678498578085} is an apocalyptic number.

It is an amenable number.

1678498578085 is a deficient number, since it is larger than the sum of its proper divisors (623442329051).

1678498578085 is an equidigital number, since it uses as much as digits as its factorization.

1678498578085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47957102243.

The product of its (nonzero) digits is 1083801600, while the sum is 76.

The spelling of 1678498578085 in words is "one trillion, six hundred seventy-eight billion, four hundred ninety-eight million, five hundred seventy-eight thousand, eighty-five".