126456654647 has 2 divisors, whose sum is σ = 126456654648. Its totient is φ = 126456654646.

The previous prime is 126456654617. The next prime is 126456654697. The reversal of 126456654647 is 746456654621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126456654647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126456654592 and 126456654601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126456654617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63228327323 + 63228327324.

It is an arithmetic number, because the mean of its divisors is an integer number (63228327324).

Almost surely, 2^126456654647 is an apocalyptic number.

126456654647 is a deficient number, since it is larger than the sum of its proper divisors (1).

126456654647 is an equidigital number, since it uses as much as digits as its factorization.

126456654647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 56.

The spelling of 126456654647 in words is "one hundred twenty-six billion, four hundred fifty-six million, six hundred fifty-four thousand, six hundred forty-seven".