511212455505 has 12 divisors (see below), whose sum is σ = 886101589620. Its totient is φ = 272646642912.

The previous prime is 511212455489. The next prime is 511212455527. The reversal of 511212455505 is 505554212115.

511212455505 is a `hidden beast` number, since 5 + 1 + 121 + 24 + 5 + 5 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 132263869761 + 378948585744 = 363681^2 + 615588^2 .

It is not a de Polignac number, because 511212455505 - 2⁴ = 511212455489 is a prime.

It is a super-2 number, since 2×511212455505² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511212455505.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 5680138350 + ... + 5680138439.

It is an arithmetic number, because the mean of its divisors is an integer number (73841799135).

Almost surely, 2^511212455505 is an apocalyptic number.

It is an amenable number.

511212455505 is a deficient number, since it is larger than the sum of its proper divisors (374889134115).

511212455505 is a wasteful number, since it uses less digits than its factorization.

511212455505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360276800 (or 11360276797 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 511212455505 in words is "five hundred eleven billion, two hundred twelve million, four hundred fifty-five thousand, five hundred five".