27899630357 has 2 divisors, whose sum is σ = 27899630358. Its totient is φ = 27899630356.

The previous prime is 27899630327. The next prime is 27899630401. The reversal of 27899630357 is 75303699872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14105362756 + 13794267601 = 118766^2 + 117449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27899630357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27899630296 and 27899630305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27899630327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13949815178 + 13949815179.

It is an arithmetic number, because the mean of its divisors is an integer number (13949815179).

Almost surely, 2^27899630357 is an apocalyptic number.

It is an amenable number.

27899630357 is a deficient number, since it is larger than the sum of its proper divisors (1).

27899630357 is an equidigital number, since it uses as much as digits as its factorization.

27899630357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 59.

The spelling of 27899630357 in words is "twenty-seven billion, eight hundred ninety-nine million, six hundred thirty thousand, three hundred fifty-seven".