27777133157 has 2 divisors, whose sum is σ = 27777133158. Its totient is φ = 27777133156.

The previous prime is 27777133123. The next prime is 27777133169. The reversal of 27777133157 is 75133177772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24644604196 + 3132528961 = 156986^2 + 55969^2 .

It is a cyclic number.

It is not a de Polignac number, because 27777133157 - 2⁶ = 27777133093 is a prime.

It is a super-3 number, since 3×27777133157³ (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 (27777133177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888566578 + 13888566579.

It is an arithmetic number, because the mean of its divisors is an integer number (13888566579).

Almost surely, 2^27777133157 is an apocalyptic number.

It is an amenable number.

27777133157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777133157 is an equidigital number, since it uses as much as digits as its factorization.

27777133157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512630, while the sum is 50.

The spelling of 27777133157 in words is "twenty-seven billion, seven hundred seventy-seven million, one hundred thirty-three thousand, one hundred fifty-seven".