510561661115 has 8 divisors (see below), whose sum is σ = 668371629168. Its totient is φ = 371317571680.

The previous prime is 510561661097. The next prime is 510561661121. The reversal of 510561661115 is 511166165015.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 510561661115 - 2¹² = 510561657019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4641469592 + ... + 4641469701.

It is an arithmetic number, because the mean of its divisors is an integer number (83546453646).

Almost surely, 2^510561661115 is an apocalyptic number.

510561661115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

510561661115 is a deficient number, since it is larger than the sum of its proper divisors (157809968053).

510561661115 is a wasteful number, since it uses less digits than its factorization.

510561661115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9282939309.

The product of its (nonzero) digits is 27000, while the sum is 38.

It can be divided in two parts, 51056 and 1661115, that added together give a palindrome (1712171).

The spelling of 510561661115 in words is "five hundred ten billion, five hundred sixty-one million, six hundred sixty-one thousand, one hundred fifteen".