157144285817 has 2 divisors, whose sum is σ = 157144285818. Its totient is φ = 157144285816.

The previous prime is 157144285699. The next prime is 157144285843. The reversal of 157144285817 is 718582441751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147224922601 + 9919363216 = 383699^2 + 99596^2 .

It is an emirp because it is prime and its reverse (718582441751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157144285817 - 2³⁴ = 139964416633 is a prime.

It is not a weakly prime, because it can be changed into another prime (157144585817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78572142908 + 78572142909.

It is an arithmetic number, because the mean of its divisors is an integer number (78572142909).

Almost surely, 2^157144285817 is an apocalyptic number.

It is an amenable number.

157144285817 is a deficient number, since it is larger than the sum of its proper divisors (1).

157144285817 is an equidigital number, since it uses as much as digits as its factorization.

157144285817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2508800, while the sum is 53.

The spelling of 157144285817 in words is "one hundred fifty-seven billion, one hundred forty-four million, two hundred eighty-five thousand, eight hundred seventeen".