505717012072 has 16 divisors (see below), whose sum is σ = 948226953060. Its totient is φ = 252856491264.

The previous prime is 505717012049. The next prime is 505717012123. The reversal of 505717012072 is 270210717505.

It can be written as a sum of positive squares in 2 ways, for example, as 399340580356 + 106376431716 = 631934^2 + 326154^2 .

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, 1765008 + ... + 2031424.

Almost surely, 2^505717012072 is an apocalyptic number.

It is an amenable number.

505717012072 is a deficient number, since it is larger than the sum of its proper divisors (442509940988).

505717012072 is a wasteful number, since it uses less digits than its factorization.

505717012072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503700 (or 503696 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 37.

Adding to 505717012072 its reverse (270210717505), we get a palindrome (775927729577).

The spelling of 505717012072 in words is "five hundred five billion, seven hundred seventeen million, twelve thousand, seventy-two".