27740552137 has 4 divisors (see below), whose sum is σ = 27746395776. Its totient is φ = 27734708500.

The previous prime is 27740552129. The next prime is 27740552143. The reversal of 27740552137 is 73125504772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27740552137 - 2³ = 27740552129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27740552093 and 27740552102.

It is not an unprimeable number, because it can be changed into a prime (27740552237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2914693 + ... + 2924194.

It is an arithmetic number, because the mean of its divisors is an integer number (6936598944).

Almost surely, 2^27740552137 is an apocalyptic number.

It is an amenable number.

27740552137 is a deficient number, since it is larger than the sum of its proper divisors (5843639).

27740552137 is an equidigital number, since it uses as much as digits as its factorization.

27740552137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843638.

The product of its (nonzero) digits is 411600, while the sum is 43.

The spelling of 27740552137 in words is "twenty-seven billion, seven hundred forty million, five hundred fifty-two thousand, one hundred thirty-seven".