27556171051 has 2 divisors, whose sum is σ = 27556171052. Its totient is φ = 27556171050.

The previous prime is 27556171021. The next prime is 27556171057. The reversal of 27556171051 is 15017165572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27556171051 - 2⁹ = 27556170539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27556170995 and 27556171013.

It is not a weakly prime, because it can be changed into another prime (27556171057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13778085525 + 13778085526.

It is an arithmetic number, because the mean of its divisors is an integer number (13778085526).

Almost surely, 2^27556171051 is an apocalyptic number.

27556171051 is a deficient number, since it is larger than the sum of its proper divisors (1).

27556171051 is an equidigital number, since it uses as much as digits as its factorization.

27556171051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 27556171051 in words is "twenty-seven billion, five hundred fifty-six million, one hundred seventy-one thousand, fifty-one".