516566412545 has 16 divisors (see below), whose sum is σ = 643446816768. Its totient is φ = 397829999040.

The previous prime is 516566412533. The next prime is 516566412559. The reversal of 516566412545 is 545214665615.

It is a de Polignac number, because none of the positive numbers 2^k-516566412545 is a prime.

It is a super-2 number, since 2×516566412545² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516566412493 and 516566412502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18003329 + ... + 18031998.

It is an arithmetic number, because the mean of its divisors is an integer number (40215426048).

Almost surely, 2^516566412545 is an apocalyptic number.

It is an amenable number.

516566412545 is a deficient number, since it is larger than the sum of its proper divisors (126880404223).

516566412545 is a wasteful number, since it uses less digits than its factorization.

516566412545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36035440.

The product of its digits is 4320000, while the sum is 50.

The spelling of 516566412545 in words is "five hundred sixteen billion, five hundred sixty-six million, four hundred twelve thousand, five hundred forty-five".