27455756740 has 36 divisors (see below), whose sum is σ = 57866779908. Its totient is φ = 10942397440.

The previous prime is 27455756737. The next prime is 27455756759. The reversal of 27455756740 is 4765755472.

It can be written as a sum of positive squares in 6 ways, for example, as 5554124676 + 21901632064 = 74526^2 + 147992^2 .

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, 13192500 + ... + 13194580.

It is an arithmetic number, because the mean of its divisors is an integer number (1607410553).

Almost surely, 2^27455756740 is an apocalyptic number.

27455756740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27455756740 is an abundant number, since it is smaller than the sum of its proper divisors (30411023168).

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

27455756740 is an equidigital number, since it uses as much as digits as its factorization.

27455756740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 52.

The spelling of 27455756740 in words is "twenty-seven billion, four hundred fifty-five million, seven hundred fifty-six thousand, seven hundred forty".