126051202681 has 2 divisors, whose sum is σ = 126051202682. Its totient is φ = 126051202680.

The previous prime is 126051202663. The next prime is 126051202703. The reversal of 126051202681 is 186202150621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66275353600 + 59775849081 = 257440^2 + 244491^2 .

It is a cyclic number.

It is not a de Polignac number, because 126051202681 - 2¹⁷ = 126051071609 is a prime.

It is a super-2 number, since 2×126051202681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126051202601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63025601340 + 63025601341.

It is an arithmetic number, because the mean of its divisors is an integer number (63025601341).

Almost surely, 2^126051202681 is an apocalyptic number.

It is an amenable number.

126051202681 is a deficient number, since it is larger than the sum of its proper divisors (1).

126051202681 is an equidigital number, since it uses as much as digits as its factorization.

126051202681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 126051202681 in words is "one hundred twenty-six billion, fifty-one million, two hundred two thousand, six hundred eighty-one".