126601332251 has 2 divisors, whose sum is σ = 126601332252. Its totient is φ = 126601332250.

The previous prime is 126601332239. The next prime is 126601332283. The reversal of 126601332251 is 152233106621.

It is a happy number.

It is an a-pointer prime, because the next prime (126601332283) can be obtained adding 126601332251 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (152233106621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126601332251 is a prime.

It is not a weakly prime, because it can be changed into another prime (126601331251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63300666125 + 63300666126.

It is an arithmetic number, because the mean of its divisors is an integer number (63300666126).

Almost surely, 2^126601332251 is an apocalyptic number.

126601332251 is a deficient number, since it is larger than the sum of its proper divisors (1).

126601332251 is an equidigital number, since it uses as much as digits as its factorization.

126601332251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 126601332251 its reverse (152233106621), we get a palindrome (278834438872).

The spelling of 126601332251 in words is "one hundred twenty-six billion, six hundred one million, three hundred thirty-two thousand, two hundred fifty-one".