126404550644 has 24 divisors (see below), whose sum is σ = 230864440128. Its totient is φ = 60444204480.

The previous prime is 126404550599. The next prime is 126404550781. The reversal of 126404550644 is 446055404621.

It is a super-2 number, since 2×126404550644² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 450899 + ... + 675365.

It is an arithmetic number, because the mean of its divisors is an integer number (9619351672).

Almost surely, 2^126404550644 is an apocalyptic number.

It is an amenable number.

126404550644 is a deficient number, since it is larger than the sum of its proper divisors (104459889484).

126404550644 is a wasteful number, since it uses less digits than its factorization.

126404550644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230615 (or 230613 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 126404550644 in words is "one hundred twenty-six billion, four hundred four million, five hundred fifty thousand, six hundred forty-four".