511212346061 has 2 divisors, whose sum is σ = 511212346062. Its totient is φ = 511212346060.

The previous prime is 511212346003. The next prime is 511212346063. The reversal of 511212346061 is 160643212115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450039722500 + 61172623561 = 670850^2 + 247331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511212346061 is a prime.

It is a super-2 number, since 2×511212346061² (a number of 24 digits) contains 22 as substring.

Together with 511212346063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511212346063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255606173030 + 255606173031.

It is an arithmetic number, because the mean of its divisors is an integer number (255606173031).

Almost surely, 2^511212346061 is an apocalyptic number.

It is an amenable number.

511212346061 is a deficient number, since it is larger than the sum of its proper divisors (1).

511212346061 is an equidigital number, since it uses as much as digits as its factorization.

511212346061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 511212346061 its reverse (160643212115), we get a palindrome (671855558176).

The spelling of 511212346061 in words is "five hundred eleven billion, two hundred twelve million, three hundred forty-six thousand, sixty-one".