126005751251 has 2 divisors, whose sum is σ = 126005751252. Its totient is φ = 126005751250.

The previous prime is 126005751239. The next prime is 126005751269. The reversal of 126005751251 is 152157500621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126005751251 - 2²⁶ = 125938642387 is a prime.

It is not a weakly prime, because it can be changed into another prime (126005756251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63002875625 + 63002875626.

It is an arithmetic number, because the mean of its divisors is an integer number (63002875626).

Almost surely, 2^126005751251 is an apocalyptic number.

126005751251 is a deficient number, since it is larger than the sum of its proper divisors (1).

126005751251 is an equidigital number, since it uses as much as digits as its factorization.

126005751251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 126005751251 in words is "one hundred twenty-six billion, five million, seven hundred fifty-one thousand, two hundred fifty-one".