505212640004 has 12 divisors (see below), whose sum is σ = 893236781724. Its totient is φ = 250002130944.

The previous prime is 505212640003. The next prime is 505212640019. The reversal of 505212640004 is 400046212505.

It can be written as a sum of positive squares in 2 ways, for example, as 147572759104 + 357639880900 = 384152^2 + 598030^2 .

It is a super-2 number, since 2×505212640004² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505212640003) 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, 651046829 + ... + 651047604.

It is an arithmetic number, because the mean of its divisors is an integer number (74436398477).

Almost surely, 2^505212640004 is an apocalyptic number.

It is an amenable number.

505212640004 is a deficient number, since it is larger than the sum of its proper divisors (388024141720).

505212640004 is a wasteful number, since it uses less digits than its factorization.

505212640004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302094534 (or 1302094532 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 505212640004 its reverse (400046212505), we get a palindrome (905258852509).

The spelling of 505212640004 in words is "five hundred five billion, two hundred twelve million, six hundred forty thousand, four".