405066056704 has 33 divisors (see below), whose sum is σ = 809777255917. Its totient is φ = 202522845184.

The previous prime is 405066056587. The next prime is 405066056729. The reversal of 405066056704 is 407650660504.

It is a happy number.

The square root of 405066056704 is 636448.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 381864674304 + 23201382400 = 617952^2 + 152320^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20356392 + ... + 20376280.

Almost surely, 2^405066056704 is an apocalyptic number.

405066056704 is the 636448-th square number.

It is an amenable number.

405066056704 is a deficient number, since it is larger than the sum of its proper divisors (404711199213).

405066056704 is an frugal number, since it uses more digits than its factorization.

405066056704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39798 (or 19891 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 405066056704 in words is "four hundred five billion, sixty-six million, fifty-six thousand, seven hundred four".