27840682585978 has 8 divisors (see below), whose sum is σ = 41874814135872. Its totient is φ = 13882411207356.

The previous prime is 27840682585967. The next prime is 27840682585993. The reversal of 27840682585978 is 87958528604872.

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

It is a junction number, because it is equal to n+sod(n) for n = 27840682585898 and 27840682585907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18965041900 + ... + 18965043367.

It is an arithmetic number, because the mean of its divisors is an integer number (5234351766984).

Almost surely, 2^{27840682585978} is an apocalyptic number.

27840682585978 is a deficient number, since it is larger than the sum of its proper divisors (14034131549894).

27840682585978 is a wasteful number, since it uses less digits than its factorization.

27840682585978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37930085636.

The product of its (nonzero) digits is 4335206400, while the sum is 79.

The spelling of 27840682585978 in words is "twenty-seven trillion, eight hundred forty billion, six hundred eighty-two million, five hundred eighty-five thousand, nine hundred seventy-eight".