27773652157 has 2 divisors, whose sum is σ = 27773652158. Its totient is φ = 27773652156.

The previous prime is 27773652149. The next prime is 27773652223. The reversal of 27773652157 is 75125637772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20579050116 + 7194602041 = 143454^2 + 84821^2 .

It is a cyclic number.

It is not a de Polignac number, because 27773652157 - 2³ = 27773652149 is a prime.

It is a super-3 number, since 3×27773652157³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27773652457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13886826078 + 13886826079.

It is an arithmetic number, because the mean of its divisors is an integer number (13886826079).

Almost surely, 2^27773652157 is an apocalyptic number.

It is an amenable number.

27773652157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27773652157 is an equidigital number, since it uses as much as digits as its factorization.

27773652157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4321800, while the sum is 52.

The spelling of 27773652157 in words is "twenty-seven billion, seven hundred seventy-three million, six hundred fifty-two thousand, one hundred fifty-seven".