506142530616251 has 2 divisors, whose sum is σ = 506142530616252. Its totient is φ = 506142530616250.

The previous prime is 506142530616211. The next prime is 506142530616259. The reversal of 506142530616251 is 152616035241605.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506142530616251 is a prime.

It is a super-2 number, since 2×506142530616251² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 506142530616196 and 506142530616205.

It is not a weakly prime, because it can be changed into another prime (506142530616259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253071265308125 + 253071265308126.

It is an arithmetic number, because the mean of its divisors is an integer number (253071265308126).

Almost surely, 2^{506142530616251} is an apocalyptic number.

506142530616251 is a deficient number, since it is larger than the sum of its proper divisors (1).

506142530616251 is an equidigital number, since it uses as much as digits as its factorization.

506142530616251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 47.

Adding to 506142530616251 its reverse (152616035241605), we get a palindrome (658758565857856).

The spelling of 506142530616251 in words is "five hundred six trillion, one hundred forty-two billion, five hundred thirty million, six hundred sixteen thousand, two hundred fifty-one".