27656023429 has 2 divisors, whose sum is σ = 27656023430. Its totient is φ = 27656023428.

The previous prime is 27656023399. The next prime is 27656023433. The reversal of 27656023429 is 92432065672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14841330625 + 12814692804 = 121825^2 + 113202^2 .

It is a cyclic number.

It is not a de Polignac number, because 27656023429 - 2¹¹ = 27656021381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27656623429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13828011714 + 13828011715.

It is an arithmetic number, because the mean of its divisors is an integer number (13828011715).

Almost surely, 2^27656023429 is an apocalyptic number.

It is an amenable number.

27656023429 is a deficient number, since it is larger than the sum of its proper divisors (1).

27656023429 is an equidigital number, since it uses as much as digits as its factorization.

27656023429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 27656023429 in words is "twenty-seven billion, six hundred fifty-six million, twenty-three thousand, four hundred twenty-nine".