511505252011 has 8 divisors (see below), whose sum is σ = 563662317680. Its totient is φ = 461178258912.

The previous prime is 511505251991. The next prime is 511505252039. The reversal of 511505252011 is 110252505115.

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 511505252011 - 2²¹ = 511503154859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511505252911) 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, 457517556 + ... + 457518673.

It is an arithmetic number, because the mean of its divisors is an integer number (70457789710).

Almost surely, 2^511505252011 is an apocalyptic number.

511505252011 is a deficient number, since it is larger than the sum of its proper divisors (52157065669).

511505252011 is a wasteful number, since it uses less digits than its factorization.

511505252011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915036285.

The product of its (nonzero) digits is 2500, while the sum is 28.

Adding to 511505252011 its reverse (110252505115), we get a palindrome (621757757126).

The spelling of 511505252011 in words is "five hundred eleven billion, five hundred five million, two hundred fifty-two thousand, eleven".