511640011 has 6 divisors (see below), whose sum is σ = 529892012. Its totient is φ = 493996440.

The previous prime is 511639993. The next prime is 511640029. The reversal of 511640011 is 110046115.

It is an interprime number because it is at equal distance from previous prime (511639993) and next prime (511640029).

It is not a de Polignac number, because 511640011 - 2¹¹ = 511637963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511649011) 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 5 ways as a sum of consecutive naturals, for example, 303345 + ... + 305026.

Almost surely, 2^511640011 is an apocalyptic number.

511640011 is a deficient number, since it is larger than the sum of its proper divisors (18252001).

511640011 is an equidigital number, since it uses as much as digits as its factorization.

511640011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608429 (or 608400 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 511640011 is about 22619.4608910115. The cubic root of 511640011 is about 799.8124617694.

Adding to 511640011 its reverse (110046115), we get a palindrome (621686126).

The spelling of 511640011 in words is "five hundred eleven million, six hundred forty thousand, eleven".