27866502137 has 2 divisors, whose sum is σ = 27866502138. Its totient is φ = 27866502136.

The previous prime is 27866502109. The next prime is 27866502163. The reversal of 27866502137 is 73120566872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15935527696 + 11930974441 = 126236^2 + 109229^2 .

It is a cyclic number.

It is not a de Polignac number, because 27866502137 - 2⁶ = 27866502073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27866502091 and 27866502100.

It is not a weakly prime, because it can be changed into another prime (27866502197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13933251068 + 13933251069.

It is an arithmetic number, because the mean of its divisors is an integer number (13933251069).

Almost surely, 2^27866502137 is an apocalyptic number.

It is an amenable number.

27866502137 is a deficient number, since it is larger than the sum of its proper divisors (1).

27866502137 is an equidigital number, since it uses as much as digits as its factorization.

27866502137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 27866502137 in words is "twenty-seven billion, eight hundred sixty-six million, five hundred two thousand, one hundred thirty-seven".