126405646055 has 16 divisors (see below), whose sum is σ = 163613924544. Its totient is φ = 93197744640.

The previous prime is 126405646039. The next prime is 126405646067. The reversal of 126405646055 is 550646504621.

It is not a de Polignac number, because 126405646055 - 2⁴ = 126405646039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126405645997 and 126405646015.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1499954 + ... + 1581983.

It is an arithmetic number, because the mean of its divisors is an integer number (10225870284).

Almost surely, 2^126405646055 is an apocalyptic number.

126405646055 is a deficient number, since it is larger than the sum of its proper divisors (37208278489).

126405646055 is a wasteful number, since it uses less digits than its factorization.

126405646055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082586.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 126405646055 in words is "one hundred twenty-six billion, four hundred five million, six hundred forty-six thousand, fifty-five".