27740545531 has 8 divisors (see below), whose sum is σ = 28753620480. Its totient is φ = 26745089448.

The previous prime is 27740545513. The next prime is 27740545541. The reversal of 27740545531 is 13554504772.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27740545531 - 2¹¹ = 27740543483 is a prime.

It is a super-2 number, since 2×27740545531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27740545541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4401511 + ... + 4407808.

It is an arithmetic number, because the mean of its divisors is an integer number (3594202560).

Almost surely, 2^27740545531 is an apocalyptic number.

27740545531 is a deficient number, since it is larger than the sum of its proper divisors (1013074949).

27740545531 is an equidigital number, since it uses as much as digits as its factorization.

27740545531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809433.

The product of its (nonzero) digits is 588000, while the sum is 43.

The spelling of 27740545531 in words is "twenty-seven billion, seven hundred forty million, five hundred forty-five thousand, five hundred thirty-one".