516640130661 has 16 divisors (see below), whose sum is σ = 690746793984. Its totient is φ = 343481006064.

The previous prime is 516640130653. The next prime is 516640130663. The reversal of 516640130661 is 166031046615.

It is not a de Polignac number, because 516640130661 - 2³ = 516640130653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516640130663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2218990 + ... + 2440736.

It is an arithmetic number, because the mean of its divisors is an integer number (43171674624).

Almost surely, 2^516640130661 is an apocalyptic number.

It is an amenable number.

516640130661 is a deficient number, since it is larger than the sum of its proper divisors (174106663323).

516640130661 is a wasteful number, since it uses less digits than its factorization.

516640130661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223880.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 516640130661 in words is "five hundred sixteen billion, six hundred forty million, one hundred thirty thousand, six hundred sixty-one".