27430976129 has 2 divisors, whose sum is σ = 27430976130. Its totient is φ = 27430976128.

The previous prime is 27430976119. The next prime is 27430976179. The reversal of 27430976129 is 92167903472.

It is an a-pointer prime, because the next prime (27430976179) can be obtained adding 27430976129 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22837254400 + 4593721729 = 151120^2 + 67777^2 .

It is a cyclic number.

It is not a de Polignac number, because 27430976129 - 2¹⁶ = 27430910593 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27430976119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715488064 + 13715488065.

It is an arithmetic number, because the mean of its divisors is an integer number (13715488065).

Almost surely, 2^27430976129 is an apocalyptic number.

It is an amenable number.

27430976129 is a deficient number, since it is larger than the sum of its proper divisors (1).

27430976129 is an equidigital number, since it uses as much as digits as its factorization.

27430976129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 27430976129 in words is "twenty-seven billion, four hundred thirty million, nine hundred seventy-six thousand, one hundred twenty-nine".