27750751013 has 2 divisors, whose sum is σ = 27750751014. Its totient is φ = 27750751012.

The previous prime is 27750751009. The next prime is 27750751043. The reversal of 27750751013 is 31015705772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27376018849 + 374732164 = 165457^2 + 19358^2 .

It is a cyclic number.

It is not a de Polignac number, because 27750751013 - 2² = 27750751009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27750751003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13875375506 + 13875375507.

It is an arithmetic number, because the mean of its divisors is an integer number (13875375507).

Almost surely, 2^27750751013 is an apocalyptic number.

It is an amenable number.

27750751013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27750751013 is an equidigital number, since it uses as much as digits as its factorization.

27750751013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51450, while the sum is 38.

The spelling of 27750751013 in words is "twenty-seven billion, seven hundred fifty million, seven hundred fifty-one thousand, thirteen".