511020605011 has 24 divisors (see below), whose sum is σ = 611691777216. Its totient is φ = 425360557440.

The previous prime is 511020604993. The next prime is 511020605027. The reversal of 511020605011 is 110506020115.

It is a happy number.

It is not a de Polignac number, because 511020605011 - 2⁷ = 511020604883 is a prime.

It is a super-2 number, since 2×511020605011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511020605611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 674070 + ... + 1215076.

It is an arithmetic number, because the mean of its divisors is an integer number (25487157384).

Almost surely, 2^511020605011 is an apocalyptic number.

511020605011 is a deficient number, since it is larger than the sum of its proper divisors (100671172205).

511020605011 is a wasteful number, since it uses less digits than its factorization.

511020605011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541579 (or 541572 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 511020605011 its reverse (110506020115), we get a palindrome (621526625126).

The spelling of 511020605011 in words is "five hundred eleven billion, twenty million, six hundred five thousand, eleven".