27144936157 has 2 divisors, whose sum is σ = 27144936158. Its totient is φ = 27144936156.

The previous prime is 27144936121. The next prime is 27144936199. The reversal of 27144936157 is 75163944172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20089944121 + 7054992036 = 141739^2 + 83994^2 .

It is a cyclic number.

It is not a de Polignac number, because 27144936157 - 2²³ = 27136547549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27144936157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27144936457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572468078 + 13572468079.

It is an arithmetic number, because the mean of its divisors is an integer number (13572468079).

Almost surely, 2^27144936157 is an apocalyptic number.

It is an amenable number.

27144936157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27144936157 is an equidigital number, since it uses as much as digits as its factorization.

27144936157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The spelling of 27144936157 in words is "twenty-seven billion, one hundred forty-four million, nine hundred thirty-six thousand, one hundred fifty-seven".