518856860300381 has 2 divisors, whose sum is σ = 518856860300382. Its totient is φ = 518856860300380.

The previous prime is 518856860300357. The next prime is 518856860300419. The reversal of 518856860300381 is 183003068658815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334229366727481 + 184627493572900 = 18281941^2 + 13587770^2 .

It is a cyclic number.

It is not a de Polignac number, because 518856860300381 - 2¹⁴ = 518856860283997 is a prime.

It is a super-2 number, since 2×518856860300381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518856860390381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259428430150190 + 259428430150191.

It is an arithmetic number, because the mean of its divisors is an integer number (259428430150191).

Almost surely, 2^{518856860300381} is an apocalyptic number.

It is an amenable number.

518856860300381 is a deficient number, since it is larger than the sum of its proper divisors (1).

518856860300381 is an equidigital number, since it uses as much as digits as its factorization.

518856860300381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33177600, while the sum is 62.

The spelling of 518856860300381 in words is "five hundred eighteen trillion, eight hundred fifty-six billion, eight hundred sixty million, three hundred thousand, three hundred eighty-one".