27755025461 has 2 divisors, whose sum is σ = 27755025462. Its totient is φ = 27755025460.

The previous prime is 27755025383. The next prime is 27755025581. The reversal of 27755025461 is 16452055772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24203580625 + 3551444836 = 155575^2 + 59594^2 .

It is a cyclic number.

It is not a de Polignac number, because 27755025461 - 2¹⁸ = 27754763317 is a prime.

It is a super-3 number, since 3×27755025461³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27755021461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877512730 + 13877512731.

It is an arithmetic number, because the mean of its divisors is an integer number (13877512731).

Almost surely, 2^27755025461 is an apocalyptic number.

It is an amenable number.

27755025461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27755025461 is an equidigital number, since it uses as much as digits as its factorization.

27755025461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 27755025461 in words is "twenty-seven billion, seven hundred fifty-five million, twenty-five thousand, four hundred sixty-one".