27427509440 has 56 divisors (see below), whose sum is σ = 65327387760. Its totient is φ = 10968378368.

The previous prime is 27427509433. The next prime is 27427509469. The reversal of 27427509440 is 4490572472.

It is a super-2 number, since 2×27427509440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27427509391 and 27427509400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1862426 + ... + 1877094.

Almost surely, 2^27427509440 is an apocalyptic number.

27427509440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27427509440 is an abundant number, since it is smaller than the sum of its proper divisors (37899878320).

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

27427509440 is a wasteful number, since it uses less digits than its factorization.

27427509440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20529 (or 20519 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 27427509440 in words is "twenty-seven billion, four hundred twenty-seven million, five hundred nine thousand, four hundred forty".