512020044432653 has 4 divisors (see below), whose sum is σ = 512072889941820. Its totient is φ = 511967198923488.

The previous prime is 512020044432643. The next prime is 512020044432709. The reversal of 512020044432653 is 356234440020215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192503775932329 + 319516268500324 = 13874573^2 + 17875018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512020044432653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 512020044432653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512020044432643) 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, 26422740050 + ... + 26422759427.

It is an arithmetic number, because the mean of its divisors is an integer number (128018222485455).

Almost surely, 2^{512020044432653} is an apocalyptic number.

It is an amenable number.

512020044432653 is a deficient number, since it is larger than the sum of its proper divisors (52845509167).

512020044432653 is an equidigital number, since it uses as much as digits as its factorization.

512020044432653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52845509166.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 512020044432653 its reverse (356234440020215), we get a palindrome (868254484452868).

The spelling of 512020044432653 in words is "five hundred twelve trillion, twenty billion, forty-four million, four hundred thirty-two thousand, six hundred fifty-three".