516013012661 has 16 divisors (see below), whose sum is σ = 522622774080. Its totient is φ = 509450472960.

The previous prime is 516013012649. The next prime is 516013012679. The reversal of 516013012661 is 166210310615.

It is a cyclic number.

It is not a de Polignac number, because 516013012661 - 2⁶ = 516013012597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516013012601) 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, 20473055 + ... + 20498243.

It is an arithmetic number, because the mean of its divisors is an integer number (32663923380).

Almost surely, 2^516013012661 is an apocalyptic number.

It is an amenable number.

516013012661 is a deficient number, since it is larger than the sum of its proper divisors (6609761419).

516013012661 is a wasteful number, since it uses less digits than its factorization.

516013012661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26116.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 516013012661 in words is "five hundred sixteen billion, thirteen million, twelve thousand, six hundred sixty-one".