400277705650 has 24 divisors (see below), whose sum is σ = 744571338804. Its totient is φ = 160099296000.

The previous prime is 400277705621. The next prime is 400277705657. The reversal of 400277705650 is 56507772004.

It can be written as a sum of positive squares in 6 ways, for example, as 265207490289 + 135070215361 = 514983^2 + 367519^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400277705597 and 400277705606.

It is not an unprimeable number, because it can be changed into a prime (400277705657) 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 in 11 ways as a sum of consecutive naturals, for example, 407950 + ... + 983350.

Almost surely, 2^400277705650 is an apocalyptic number.

400277705650 is a deficient number, since it is larger than the sum of its proper divisors (344293633154).

400277705650 is a wasteful number, since it uses less digits than its factorization.

400277705650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589326 (or 589321 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 43.

The spelling of 400277705650 in words is "four hundred billion, two hundred seventy-seven million, seven hundred five thousand, six hundred fifty".