126723603551 has 2 divisors, whose sum is σ = 126723603552. Its totient is φ = 126723603550.

The previous prime is 126723603541. The next prime is 126723603599. The reversal of 126723603551 is 155306327621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126723603551 - 2²² = 126719409247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126723603499 and 126723603508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126723603541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63361801775 + 63361801776.

It is an arithmetic number, because the mean of its divisors is an integer number (63361801776).

Almost surely, 2^126723603551 is an apocalyptic number.

126723603551 is a deficient number, since it is larger than the sum of its proper divisors (1).

126723603551 is an equidigital number, since it uses as much as digits as its factorization.

126723603551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 126723603551 in words is "one hundred twenty-six billion, seven hundred twenty-three million, six hundred three thousand, five hundred fifty-one".