516163132221 has 8 divisors (see below), whose sum is σ = 750782737824. Its totient is φ = 312826140720.

The previous prime is 516163132201. The next prime is 516163132237. The reversal of 516163132221 is 122231361615.

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

It is not a de Polignac number, because 516163132221 - 2¹⁴ = 516163115837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 15641307037 = 516163132221 / (5 + 1 + 6 + 1 + 6 + 3 + 1 + 3 + 2 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516163132201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7820653486 + ... + 7820653551.

It is an arithmetic number, because the mean of its divisors is an integer number (93847842228).

Almost surely, 2^516163132221 is an apocalyptic number.

It is an amenable number.

516163132221 is a deficient number, since it is larger than the sum of its proper divisors (234619605603).

516163132221 is a wasteful number, since it uses less digits than its factorization.

516163132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15641307051.

The product of its digits is 12960, while the sum is 33.

Adding to 516163132221 its reverse (122231361615), we get a palindrome (638394493836).

The spelling of 516163132221 in words is "five hundred sixteen billion, one hundred sixty-three million, one hundred thirty-two thousand, two hundred twenty-one".