27501659461 has 2 divisors, whose sum is σ = 27501659462. Its totient is φ = 27501659460.

The previous prime is 27501659387. The next prime is 27501659473. The reversal of 27501659461 is 16495610572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17087456961 + 10414202500 = 130719^2 + 102050^2 .

It is a cyclic number.

It is not a de Polignac number, because 27501659461 - 2⁷ = 27501659333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27501659491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13750829730 + 13750829731.

It is an arithmetic number, because the mean of its divisors is an integer number (13750829731).

Almost surely, 2^27501659461 is an apocalyptic number.

It is an amenable number.

27501659461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27501659461 is an equidigital number, since it uses as much as digits as its factorization.

27501659461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 27501659461 in words is "twenty-seven billion, five hundred one million, six hundred fifty-nine thousand, four hundred sixty-one".