27866473913 has 2 divisors, whose sum is σ = 27866473914. Its totient is φ = 27866473912.

The previous prime is 27866473801. The next prime is 27866473939. The reversal of 27866473913 is 31937466872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27779555584 + 86918329 = 166672^2 + 9323^2 .

It is a cyclic number.

It is not a de Polignac number, because 27866473913 - 2²² = 27862279609 is a prime.

It is not a weakly prime, because it can be changed into another prime (27866473963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13933236956 + 13933236957.

It is an arithmetic number, because the mean of its divisors is an integer number (13933236957).

Almost surely, 2^27866473913 is an apocalyptic number.

It is an amenable number.

27866473913 is a deficient number, since it is larger than the sum of its proper divisors (1).

27866473913 is an equidigital number, since it uses as much as digits as its factorization.

27866473913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 56.

The spelling of 27866473913 in words is "twenty-seven billion, eight hundred sixty-six million, four hundred seventy-three thousand, nine hundred thirteen".