501010011011 has 16 divisors (see below), whose sum is σ = 526365423360. Its totient is φ = 475958941920.

The previous prime is 501010011001. The next prime is 501010011017. The reversal of 501010011011 is 110110010105.

It is a happy number.

It is not a de Polignac number, because 501010011011 - 2¹⁰ = 501010009987 is a prime.

It is a super-2 number, since 2×501010011011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501010010983 and 501010011001.

It is not an unprimeable number, because it can be changed into a prime (501010011017) 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 in 15 ways as a sum of consecutive naturals, for example, 3263861 + ... + 3413913.

It is an arithmetic number, because the mean of its divisors is an integer number (32897838960).

Almost surely, 2^501010011011 is an apocalyptic number.

501010011011 is a deficient number, since it is larger than the sum of its proper divisors (25355412349).

501010011011 is a wasteful number, since it uses less digits than its factorization.

501010011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151066.

The product of its (nonzero) digits is 5, while the sum is 11.

Adding to 501010011011 its reverse (110110010105), we get a palindrome (611120021116).

The spelling of 501010011011 in words is "five hundred one billion, ten million, eleven thousand, eleven".