1040866466804 has 12 divisors (see below), whose sum is σ = 1840294836324. Its totient is φ = 515067942144.

The previous prime is 1040866466797. The next prime is 1040866466807. The reversal of 1040866466804 is 4086646680401.

It can be written as a sum of positive squares in 2 ways, for example, as 140664002704 + 900202464100 = 375052^2 + 948790^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040866466807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341322379 + ... + 1341323154.

It is an arithmetic number, because the mean of its divisors is an integer number (153357903027).

Almost surely, 2^{1040866466804} is an apocalyptic number.

It is an amenable number.

1040866466804 is a deficient number, since it is larger than the sum of its proper divisors (799428369520).

1040866466804 is a wasteful number, since it uses less digits than its factorization.

1040866466804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682645634 (or 2682645632 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 53.

The spelling of 1040866466804 in words is "one trillion, forty billion, eight hundred sixty-six million, four hundred sixty-six thousand, eight hundred four".