27958869553 has 2 divisors, whose sum is σ = 27958869554. Its totient is φ = 27958869552.

The previous prime is 27958869509. The next prime is 27958869557. The reversal of 27958869553 is 35596885972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26933076769 + 1025792784 = 164113^2 + 32028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27958869553 is a prime.

It is not a weakly prime, because it can be changed into another prime (27958869557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13979434776 + 13979434777.

It is an arithmetic number, because the mean of its divisors is an integer number (13979434777).

Almost surely, 2^27958869553 is an apocalyptic number.

It is an amenable number.

27958869553 is a deficient number, since it is larger than the sum of its proper divisors (1).

27958869553 is an equidigital number, since it uses as much as digits as its factorization.

27958869553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296000, while the sum is 67.

The spelling of 27958869553 in words is "twenty-seven billion, nine hundred fifty-eight million, eight hundred sixty-nine thousand, five hundred fifty-three".