516330164381 has 8 divisors (see below), whose sum is σ = 516628556664. Its totient is φ = 516031845120.

The previous prime is 516330164377. The next prime is 516330164401. The reversal of 516330164381 is 183461033615.

It can be written as a sum of positive squares in 4 ways, for example, as 222637704025 + 293692460356 = 471845^2 + 541934^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 516330164381 - 2² = 516330164377 is a prime.

It is a super-2 number, since 2×516330164381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516330164341) 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, 20098961 + ... + 20124633.

It is an arithmetic number, because the mean of its divisors is an integer number (64578569583).

Almost surely, 2^516330164381 is an apocalyptic number.

It is an amenable number.

516330164381 is a deficient number, since it is larger than the sum of its proper divisors (298392283).

516330164381 is a wasteful number, since it uses less digits than its factorization.

516330164381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36511.

The product of its (nonzero) digits is 155520, while the sum is 41.

Adding to 516330164381 its reverse (183461033615), we get a palindrome (699791197996).

The spelling of 516330164381 in words is "five hundred sixteen billion, three hundred thirty million, one hundred sixty-four thousand, three hundred eighty-one".