511552661055 has 8 divisors (see below), whose sum is σ = 818484257712. Its totient is φ = 272828085888.

The previous prime is 511552661023. The next prime is 511552661069. The reversal of 511552661055 is 550166255115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 511552661055 - 2⁵ = 511552661023 is a prime.

It is a super-2 number, since 2×511552661055² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 511552660998 and 511552661016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17051755354 + ... + 17051755383.

It is an arithmetic number, because the mean of its divisors is an integer number (102310532214).

Almost surely, 2^511552661055 is an apocalyptic number.

511552661055 is a deficient number, since it is larger than the sum of its proper divisors (306931596657).

511552661055 is a wasteful number, since it uses less digits than its factorization.

511552661055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34103510745.

The product of its (nonzero) digits is 225000, while the sum is 42.

The spelling of 511552661055 in words is "five hundred eleven billion, five hundred fifty-two million, six hundred sixty-one thousand, fifty-five".