126617610997 has 2 divisors, whose sum is σ = 126617610998. Its totient is φ = 126617610996.

The previous prime is 126617610979. The next prime is 126617611027. The reversal of 126617610997 is 799016716621.

Together with previous prime (126617610979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94203569476 + 32414041521 = 306926^2 + 180039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126617610997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126617610907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63308805498 + 63308805499.

It is an arithmetic number, because the mean of its divisors is an integer number (63308805499).

Almost surely, 2^126617610997 is an apocalyptic number.

It is an amenable number.

126617610997 is a deficient number, since it is larger than the sum of its proper divisors (1).

126617610997 is an equidigital number, since it uses as much as digits as its factorization.

126617610997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The spelling of 126617610997 in words is "one hundred twenty-six billion, six hundred seventeen million, six hundred ten thousand, nine hundred ninety-seven".