27861754601 has 2 divisors, whose sum is σ = 27861754602. Its totient is φ = 27861754600.

The previous prime is 27861754579. The next prime is 27861754619. The reversal of 27861754601 is 10645716872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17056360000 + 10805394601 = 130600^2 + 103949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27861754601 is a prime.

It is not a weakly prime, because it can be changed into another prime (27861754621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13930877300 + 13930877301.

It is an arithmetic number, because the mean of its divisors is an integer number (13930877301).

Almost surely, 2^27861754601 is an apocalyptic number.

It is an amenable number.

27861754601 is a deficient number, since it is larger than the sum of its proper divisors (1).

27861754601 is an equidigital number, since it uses as much as digits as its factorization.

27861754601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 27861754601 in words is "twenty-seven billion, eight hundred sixty-one million, seven hundred fifty-four thousand, six hundred one".