27559478064 has 20 divisors (see below), whose sum is σ = 71195318456. Its totient is φ = 9186492672.

The previous prime is 27559478047. The next prime is 27559478101. The reversal of 27559478064 is 46087495572.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27559477995 and 27559478013.

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, 287077849 + ... + 287077944.

Almost surely, 2^27559478064 is an apocalyptic number.

27559478064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27559478064 is an abundant number, since it is smaller than the sum of its proper divisors (43635840392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27559478064 is a wasteful number, since it uses less digits than its factorization.

27559478064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574155804 (or 574155798 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 27559478064 in words is "twenty-seven billion, five hundred fifty-nine million, four hundred seventy-eight thousand, sixty-four".