126547381157 has 2 divisors, whose sum is σ = 126547381158. Its totient is φ = 126547381156.

The previous prime is 126547381123. The next prime is 126547381187. The reversal of 126547381157 is 751183745621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124659131041 + 1888250116 = 353071^2 + 43454^2 .

It is an emirp because it is prime and its reverse (751183745621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126547381157 - 2¹⁴ = 126547364773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126547381117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63273690578 + 63273690579.

It is an arithmetic number, because the mean of its divisors is an integer number (63273690579).

Almost surely, 2^126547381157 is an apocalyptic number.

It is an amenable number.

126547381157 is a deficient number, since it is larger than the sum of its proper divisors (1).

126547381157 is an equidigital number, since it uses as much as digits as its factorization.

126547381157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 50.

The spelling of 126547381157 in words is "one hundred twenty-six billion, five hundred forty-seven million, three hundred eighty-one thousand, one hundred fifty-seven".