27273156137 has 2 divisors, whose sum is σ = 27273156138. Its totient is φ = 27273156136.

The previous prime is 27273156133. The next prime is 27273156191. The reversal of 27273156137 is 73165137272.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26784922921 + 488233216 = 163661^2 + 22096^2 .

It is a cyclic number.

It is not a de Polignac number, because 27273156137 - 2² = 27273156133 is a prime.

It is not a weakly prime, because it can be changed into another prime (27273156133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13636578068 + 13636578069.

It is an arithmetic number, because the mean of its divisors is an integer number (13636578069).

Almost surely, 2^27273156137 is an apocalyptic number.

It is an amenable number.

27273156137 is a deficient number, since it is larger than the sum of its proper divisors (1).

27273156137 is an equidigital number, since it uses as much as digits as its factorization.

27273156137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 44.

The spelling of 27273156137 in words is "twenty-seven billion, two hundred seventy-three million, one hundred fifty-six thousand, one hundred thirty-seven".