505243626320 has 20 divisors (see below), whose sum is σ = 1174691431380. Its totient is φ = 202097450496.

The previous prime is 505243626311. The next prime is 505243626337. The reversal of 505243626320 is 23626342505.

It can be written as a sum of positive squares in 2 ways, for example, as 138497111104 + 366746515216 = 372152^2 + 605596^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×505243626320² (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 3 ways as a sum of consecutive naturals, for example, 3157772585 + ... + 3157772744.

It is an arithmetic number, because the mean of its divisors is an integer number (58734571569).

Almost surely, 2^505243626320 is an apocalyptic number.

It is an amenable number.

505243626320 is an abundant number, since it is smaller than the sum of its proper divisors (669447805060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505243626320 is a wasteful number, since it uses less digits than its factorization.

505243626320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315545342 (or 6315545336 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 505243626320 its reverse (23626342505), we get a palindrome (528869968825).

The spelling of 505243626320 in words is "five hundred five billion, two hundred forty-three million, six hundred twenty-six thousand, three hundred twenty".