157125812917 has 2 divisors, whose sum is σ = 157125812918. Its totient is φ = 157125812916.

The previous prime is 157125812897. The next prime is 157125812959. The reversal of 157125812917 is 719218521751.

157125812917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142152374961 + 14973437956 = 377031^2 + 122366^2 .

It is an emirp because it is prime and its reverse (719218521751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157125812917 - 2³¹ = 154978329269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157125812017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78562906458 + 78562906459.

It is an arithmetic number, because the mean of its divisors is an integer number (78562906459).

Almost surely, 2^157125812917 is an apocalyptic number.

It is an amenable number.

157125812917 is a deficient number, since it is larger than the sum of its proper divisors (1).

157125812917 is an equidigital number, since it uses as much as digits as its factorization.

157125812917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 49.

The spelling of 157125812917 in words is "one hundred fifty-seven billion, one hundred twenty-five million, eight hundred twelve thousand, nine hundred seventeen".