505351403644 has 12 divisors (see below), whose sum is σ = 893121045768. Its totient is φ = 250173962000.

The previous prime is 505351403633. The next prime is 505351403653. The reversal of 505351403644 is 446304153505.

It is a super-2 number, since 2×505351403644² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505351403597 and 505351403606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625434502 + ... + 625435309.

It is an arithmetic number, because the mean of its divisors is an integer number (74426753814).

Almost surely, 2^505351403644 is an apocalyptic number.

It is an amenable number.

505351403644 is a deficient number, since it is larger than the sum of its proper divisors (387769642124).

505351403644 is a wasteful number, since it uses less digits than its factorization.

505351403644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250869916 (or 1250869914 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 505351403644 in words is "five hundred five billion, three hundred fifty-one million, four hundred three thousand, six hundred forty-four".