505404451144 has 16 divisors (see below), whose sum is σ = 948078485100. Its totient is φ = 252583521792.

The previous prime is 505404451129. The next prime is 505404451147. The reversal of 505404451144 is 441154404505.

It can be written as a sum of positive squares in 2 ways, for example, as 468866128644 + 36538322500 = 684738^2 + 191150^2 .

It is not an unprimeable number, because it can be changed into a prime (505404451147) 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, 14819877 + ... + 14853940.

Almost surely, 2^505404451144 is an apocalyptic number.

It is an amenable number.

505404451144 is a deficient number, since it is larger than the sum of its proper divisors (442674033956).

505404451144 is a wasteful number, since it uses less digits than its factorization.

505404451144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29675952 (or 29675948 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 505404451144 its reverse (441154404505), we get a palindrome (946558855649).

The spelling of 505404451144 in words is "five hundred five billion, four hundred four million, four hundred fifty-one thousand, one hundred forty-four".