126551412401 has 2 divisors, whose sum is σ = 126551412402. Its totient is φ = 126551412400.

The previous prime is 126551412349. The next prime is 126551412431. The reversal of 126551412401 is 104214155621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111406418176 + 15144994225 = 333776^2 + 123065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126551412401 is a prime.

It is not a weakly prime, because it can be changed into another prime (126551412431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63275706200 + 63275706201.

It is an arithmetic number, because the mean of its divisors is an integer number (63275706201).

Almost surely, 2^126551412401 is an apocalyptic number.

It is an amenable number.

126551412401 is a deficient number, since it is larger than the sum of its proper divisors (1).

126551412401 is an equidigital number, since it uses as much as digits as its factorization.

126551412401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 126551412401 in words is "one hundred twenty-six billion, five hundred fifty-one million, four hundred twelve thousand, four hundred one".