27798738601 has 2 divisors, whose sum is σ = 27798738602. Its totient is φ = 27798738600.

The previous prime is 27798738587. The next prime is 27798738673. The reversal of 27798738601 is 10683789772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25084224400 + 2714514201 = 158380^2 + 52101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27798738601 is a prime.

It is not a weakly prime, because it can be changed into another prime (27798732601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13899369300 + 13899369301.

It is an arithmetic number, because the mean of its divisors is an integer number (13899369301).

Almost surely, 2^27798738601 is an apocalyptic number.

It is an amenable number.

27798738601 is a deficient number, since it is larger than the sum of its proper divisors (1).

27798738601 is an equidigital number, since it uses as much as digits as its factorization.

27798738601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 27798738601 in words is "twenty-seven billion, seven hundred ninety-eight million, seven hundred thirty-eight thousand, six hundred one".