505404403366 has 16 divisors (see below), whose sum is σ = 774567599040. Its totient is φ = 247219801920.

The previous prime is 505404403351. The next prime is 505404403417. The reversal of 505404403366 is 663304404505.

It is a happy number.

It is a super-2 number, since 2×505404403366² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928311 + ... + 1368418.

It is an arithmetic number, because the mean of its divisors is an integer number (48410474940).

Almost surely, 2^505404403366 is an apocalyptic number.

505404403366 is a deficient number, since it is larger than the sum of its proper divisors (269163195674).

505404403366 is a wasteful number, since it uses less digits than its factorization.

505404403366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299119.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 505404403366 in words is "five hundred five billion, four hundred four million, four hundred three thousand, three hundred sixty-six".