505668480442 has 4 divisors (see below), whose sum is σ = 758502720666. Its totient is φ = 252834240220.

The previous prime is 505668480407. The next prime is 505668480463. The reversal of 505668480442 is 244084866505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 269432626761 + 236235853681 = 519069^2 + 486041^2 .

It is a super-2 number, since 2×505668480442² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505668480442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126417120109 + ... + 126417120112.

Almost surely, 2^505668480442 is an apocalyptic number.

505668480442 is a deficient number, since it is larger than the sum of its proper divisors (252834240224).

505668480442 is a wasteful number, since it uses less digits than its factorization.

505668480442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252834240223.

The product of its (nonzero) digits is 7372800, while the sum is 52.

The spelling of 505668480442 in words is "five hundred five billion, six hundred sixty-eight million, four hundred eighty thousand, four hundred forty-two".