27803900057 has 2 divisors, whose sum is σ = 27803900058. Its totient is φ = 27803900056.

The previous prime is 27803899997. The next prime is 27803900071. The reversal of 27803900057 is 75000930872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19681564681 + 8122335376 = 140291^2 + 90124^2 .

It is a cyclic number.

It is not a de Polignac number, because 27803900057 - 2¹⁸ = 27803637913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27803899987 and 27803900023.

It is not a weakly prime, because it can be changed into another prime (27803900077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13901950028 + 13901950029.

It is an arithmetic number, because the mean of its divisors is an integer number (13901950029).

Almost surely, 2^27803900057 is an apocalyptic number.

It is an amenable number.

27803900057 is a deficient number, since it is larger than the sum of its proper divisors (1).

27803900057 is an equidigital number, since it uses as much as digits as its factorization.

27803900057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 27803900057 in words is "twenty-seven billion, eight hundred three million, nine hundred thousand, fifty-seven".