510536004661 has 4 divisors (see below), whose sum is σ = 510559709292. Its totient is φ = 510512300032.

The previous prime is 510536004637. The next prime is 510536004673. The reversal of 510536004661 is 166400635015.

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 170887158225 + 339648846436 = 413385^2 + 582794^2 .

It is a cyclic number.

It is not a de Polignac number, because 510536004661 - 2⁷ = 510536004533 is a prime.

It is a super-2 number, since 2×510536004661² (a number of 24 digits) contains 22 as substring.

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 510536004661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (510536004161) 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, 11819980 + ... + 11863093.

It is an arithmetic number, because the mean of its divisors is an integer number (127639927323).

Almost surely, 2^510536004661 is an apocalyptic number.

It is an amenable number.

510536004661 is a deficient number, since it is larger than the sum of its proper divisors (23704631).

510536004661 is a wasteful number, since it uses less digits than its factorization.

510536004661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23704630.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 510536004661 its reverse (166400635015), we get a palindrome (676936639676).

The spelling of 510536004661 in words is "five hundred ten billion, five hundred thirty-six million, four thousand, six hundred sixty-one".