126996934643057 has 2 divisors, whose sum is σ = 126996934643058. Its totient is φ = 126996934643056.

The previous prime is 126996934642987. The next prime is 126996934643107. The reversal of 126996934643057 is 750346439699621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111191984547121 + 15804950095936 = 10544761^2 + 3975544^2 .

It is a cyclic number.

It is not a de Polignac number, because 126996934643057 - 2¹⁰ = 126996934642033 is a prime.

It is a super-2 number, since 2×126996934643057² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126996934640057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63498467321528 + 63498467321529.

It is an arithmetic number, because the mean of its divisors is an integer number (63498467321529).

Almost surely, 2^{126996934643057} is an apocalyptic number.

It is an amenable number.

126996934643057 is a deficient number, since it is larger than the sum of its proper divisors (1).

126996934643057 is an equidigital number, since it uses as much as digits as its factorization.

126996934643057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587237120, while the sum is 74.

The spelling of 126996934643057 in words is "one hundred twenty-six trillion, nine hundred ninety-six billion, nine hundred thirty-four million, six hundred forty-three thousand, fifty-seven".