511105511051 has 2 divisors, whose sum is σ = 511105511052. Its totient is φ = 511105511050.

The previous prime is 511105510913. The next prime is 511105511053. The reversal of 511105511051 is 150115501115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 511105511051 - 2²⁶ = 511038402187 is a prime.

It is a super-2 number, since 2×511105511051² (a number of 24 digits) contains 22 as substring.

Together with 511105511053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 511105511051.

It is not a weakly prime, because it can be changed into another prime (511105511053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255552755525 + 255552755526.

It is an arithmetic number, because the mean of its divisors is an integer number (255552755526).

Almost surely, 2^511105511051 is an apocalyptic number.

511105511051 is a deficient number, since it is larger than the sum of its proper divisors (1).

511105511051 is an equidigital number, since it uses as much as digits as its factorization.

511105511051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 625, while the sum is 26.

The spelling of 511105511051 in words is "five hundred eleven billion, one hundred five million, five hundred eleven thousand, fifty-one".