126143815541 has 2 divisors, whose sum is σ = 126143815542. Its totient is φ = 126143815540.

The previous prime is 126143815517. The next prime is 126143815559. The reversal of 126143815541 is 145518341621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76463863441 + 49679952100 = 276521^2 + 222890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126143815541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126143815741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63071907770 + 63071907771.

It is an arithmetic number, because the mean of its divisors is an integer number (63071907771).

Almost surely, 2^126143815541 is an apocalyptic number.

It is an amenable number.

126143815541 is a deficient number, since it is larger than the sum of its proper divisors (1).

126143815541 is an equidigital number, since it uses as much as digits as its factorization.

126143815541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 41.

The spelling of 126143815541 in words is "one hundred twenty-six billion, one hundred forty-three million, eight hundred fifteen thousand, five hundred forty-one".