27657484740 has 72 divisors (see below), whose sum is σ = 84055066368. Its totient is φ = 7361202240.

The previous prime is 27657484733. The next prime is 27657484871. The reversal of 27657484740 is 4748475672.

27657484740 is a `hidden beast` number, since 2 + 76 + 57 + 484 + 7 + 40 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52756 + ... + 241035.

Almost surely, 2^27657484740 is an apocalyptic number.

27657484740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27657484740 is an abundant number, since it is smaller than the sum of its proper divisors (56397581628).

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

27657484740 is a wasteful number, since it uses less digits than its factorization.

27657484740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294329 (or 294324 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 54.

The spelling of 27657484740 in words is "twenty-seven billion, six hundred fifty-seven million, four hundred eighty-four thousand, seven hundred forty".