126440120365640 has 64 divisors (see below), whose sum is σ = 293682486240000. Its totient is φ = 48962693993472.

The previous prime is 126440120365609. The next prime is 126440120365687. The reversal of 126440120365640 is 46563021044621.

126440120365640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 126440120365591 and 126440120365600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325078640 + ... + 325467359.

It is an arithmetic number, because the mean of its divisors is an integer number (4588788847500).

Almost surely, 2^{126440120365640} is an apocalyptic number.

126440120365640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126440120365640 is an abundant number, since it is smaller than the sum of its proper divisors (167242365874360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126440120365640 is a wasteful number, since it uses less digits than its factorization.

126440120365640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650546166 (or 650546162 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 126440120365640 in words is "one hundred twenty-six trillion, four hundred forty billion, one hundred twenty million, three hundred sixty-five thousand, six hundred forty".