126728087873 has 2 divisors, whose sum is σ = 126728087874. Its totient is φ = 126728087872.

The previous prime is 126728087797. The next prime is 126728087879. The reversal of 126728087873 is 378780827621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117191198224 + 9536889649 = 342332^2 + 97657^2 .

It is a cyclic number.

It is not a de Polignac number, because 126728087873 - 2¹⁴ = 126728071489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126728087879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63364043936 + 63364043937.

It is an arithmetic number, because the mean of its divisors is an integer number (63364043937).

Almost surely, 2^126728087873 is an apocalyptic number.

It is an amenable number.

126728087873 is a deficient number, since it is larger than the sum of its proper divisors (1).

126728087873 is an equidigital number, since it uses as much as digits as its factorization.

126728087873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 126728087873 in words is "one hundred twenty-six billion, seven hundred twenty-eight million, eighty-seven thousand, eight hundred seventy-three".