511313435055121 has 2 divisors, whose sum is σ = 511313435055122. Its totient is φ = 511313435055120.

The previous prime is 511313435055091. The next prime is 511313435055127. The reversal of 511313435055121 is 121550534313115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262060700747521 + 249252734307600 = 16188289^2 + 15787740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511313435055121 is a prime.

It is a super-2 number, since 2×511313435055121² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511313435055127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255656717527560 + 255656717527561.

It is an arithmetic number, because the mean of its divisors is an integer number (255656717527561).

Almost surely, 2^{511313435055121} is an apocalyptic number.

It is an amenable number.

511313435055121 is a deficient number, since it is larger than the sum of its proper divisors (1).

511313435055121 is an equidigital number, since it uses as much as digits as its factorization.

511313435055121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 40.

Adding to 511313435055121 its reverse (121550534313115), we get a palindrome (632863969368236).

The spelling of 511313435055121 in words is "five hundred eleven trillion, three hundred thirteen billion, four hundred thirty-five million, fifty-five thousand, one hundred twenty-one".