27774370513 has 2 divisors, whose sum is σ = 27774370514. Its totient is φ = 27774370512.

The previous prime is 27774370501. The next prime is 27774370523. The reversal of 27774370513 is 31507347772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14377928464 + 13396442049 = 119908^2 + 115743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27774370513 is a prime.

It is not a weakly prime, because it can be changed into another prime (27774370523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887185256 + 13887185257.

It is an arithmetic number, because the mean of its divisors is an integer number (13887185257).

Almost surely, 2^27774370513 is an apocalyptic number.

It is an amenable number.

27774370513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27774370513 is an equidigital number, since it uses as much as digits as its factorization.

27774370513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864360, while the sum is 46.

The spelling of 27774370513 in words is "twenty-seven billion, seven hundred seventy-four million, three hundred seventy thousand, five hundred thirteen".