126628236457 has 2 divisors, whose sum is σ = 126628236458. Its totient is φ = 126628236456.

The previous prime is 126628236433. The next prime is 126628236461. The reversal of 126628236457 is 754632826621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66535107136 + 60093129321 = 257944^2 + 245139^2 .

It is a cyclic number.

It is not a de Polignac number, because 126628236457 - 2¹¹ = 126628234409 is a prime.

It is not a weakly prime, because it can be changed into another prime (126628236467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63314118228 + 63314118229.

It is an arithmetic number, because the mean of its divisors is an integer number (63314118229).

Almost surely, 2^126628236457 is an apocalyptic number.

It is an amenable number.

126628236457 is a deficient number, since it is larger than the sum of its proper divisors (1).

126628236457 is an equidigital number, since it uses as much as digits as its factorization.

126628236457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 52.

The spelling of 126628236457 in words is "one hundred twenty-six billion, six hundred twenty-eight million, two hundred thirty-six thousand, four hundred fifty-seven".