27752165540 has 36 divisors (see below), whose sum is σ = 64059343068. Its totient is φ = 10091695680.

The previous prime is 27752165527. The next prime is 27752165587. The reversal of 27752165540 is 4556125772.

It can be written as a sum of positive squares in 2 ways, for example, as 8444507236 + 19307658304 = 91894^2 + 138952^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 27752165491 and 27752165500.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5731499 + ... + 5736338.

Almost surely, 2^27752165540 is an apocalyptic number.

27752165540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27752165540 is an abundant number, since it is smaller than the sum of its proper divisors (36307177528).

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

27752165540 is a wasteful number, since it uses less digits than its factorization.

27752165540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11467868 (or 11467855 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 27752165540 in words is "twenty-seven billion, seven hundred fifty-two million, one hundred sixty-five thousand, five hundred forty".