126943244977 has 2 divisors, whose sum is σ = 126943244978. Its totient is φ = 126943244976.

The previous prime is 126943244971. The next prime is 126943245017. The reversal of 126943244977 is 779442349621.

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., 72541880896 + 54401364081 = 269336^2 + 233241^2 .

It is a cyclic number.

It is not a de Polignac number, because 126943244977 - 2²⁷ = 126809027249 is a prime.

It is a super-2 number, since 2×126943244977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126943244971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63471622488 + 63471622489.

It is an arithmetic number, because the mean of its divisors is an integer number (63471622489).

Almost surely, 2^126943244977 is an apocalyptic number.

It is an amenable number.

126943244977 is a deficient number, since it is larger than the sum of its proper divisors (1).

126943244977 is an equidigital number, since it uses as much as digits as its factorization.

126943244977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 58.

The spelling of 126943244977 in words is "one hundred twenty-six billion, nine hundred forty-three million, two hundred forty-four thousand, nine hundred seventy-seven".