511211640611 has 8 divisors (see below), whose sum is σ = 584333802240. Its totient is φ = 438112460808.

The previous prime is 511211640581. The next prime is 511211640613. The reversal of 511211640611 is 116046112115.

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

It is a cyclic number.

It is not a de Polignac number, because 511211640611 - 2¹⁴ = 511211624227 is a prime.

It is a super-2 number, since 2×511211640611² (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 (511211640613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5697761 + ... + 5786786.

It is an arithmetic number, because the mean of its divisors is an integer number (73041725280).

Almost surely, 2^511211640611 is an apocalyptic number.

511211640611 is a deficient number, since it is larger than the sum of its proper divisors (73122161629).

511211640611 is a wasteful number, since it uses less digits than its factorization.

511211640611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11490913.

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 511211640611 its reverse (116046112115), we get a palindrome (627257752726).

The spelling of 511211640611 in words is "five hundred eleven billion, two hundred eleven million, six hundred forty thousand, six hundred eleven".