27056755313521 has 2 divisors, whose sum is σ = 27056755313522. Its totient is φ = 27056755313520.

The previous prime is 27056755313513. The next prime is 27056755313603. The reversal of 27056755313521 is 12531355765072.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18623022393600 + 8433732919921 = 4315440^2 + 2904089^2 .

It is a cyclic number.

It is not a de Polignac number, because 27056755313521 - 2³ = 27056755313513 is a prime.

It is not a weakly prime, because it can be changed into another prime (27056755310521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13528377656760 + 13528377656761.

It is an arithmetic number, because the mean of its divisors is an integer number (13528377656761).

Almost surely, 2^{27056755313521} is an apocalyptic number.

It is an amenable number.

27056755313521 is a deficient number, since it is larger than the sum of its proper divisors (1).

27056755313521 is an equidigital number, since it uses as much as digits as its factorization.

27056755313521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615000, while the sum is 52.

The spelling of 27056755313521 in words is "twenty-seven trillion, fifty-six billion, seven hundred fifty-five million, three hundred thirteen thousand, five hundred twenty-one".