511105101011 has 2 divisors, whose sum is σ = 511105101012. Its totient is φ = 511105101010.

The previous prime is 511105101007. The next prime is 511105101019. The reversal of 511105101011 is 110101501115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511105101011 - 2² = 511105101007 is a prime.

It is a super-2 number, since 2×511105101011² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511105101019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255552550505 + 255552550506.

It is an arithmetic number, because the mean of its divisors is an integer number (255552550506).

Almost surely, 2^511105101011 is an apocalyptic number.

511105101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

511105101011 is an equidigital number, since it uses as much as digits as its factorization.

511105101011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25, while the sum is 17.

Adding to 511105101011 its reverse (110101501115), we get a palindrome (621206602126).

The spelling of 511105101011 in words is "five hundred eleven billion, one hundred five million, one hundred one thousand, eleven".