27078049321 has 2 divisors, whose sum is σ = 27078049322. Its totient is φ = 27078049320.

The previous prime is 27078049309. The next prime is 27078049333. The reversal of 27078049321 is 12394087072.

It is a balanced prime because it is at equal distance from previous prime (27078049309) and next prime (27078049333).

It can be written as a sum of positive squares in only one way, i.e., 21681090025 + 5396959296 = 147245^2 + 73464^2 .

It is a cyclic number.

It is not a de Polignac number, because 27078049321 - 2⁵ = 27078049289 is a prime.

It is a super-2 number, since 2×27078049321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27078049421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13539024660 + 13539024661.

It is an arithmetic number, because the mean of its divisors is an integer number (13539024661).

Almost surely, 2^27078049321 is an apocalyptic number.

It is an amenable number.

27078049321 is a deficient number, since it is larger than the sum of its proper divisors (1).

27078049321 is an equidigital number, since it uses as much as digits as its factorization.

27078049321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 27078049321 in words is "twenty-seven billion, seventy-eight million, forty-nine thousand, three hundred twenty-one".