511352505121 has 4 divisors (see below), whose sum is σ = 511571127600. Its totient is φ = 511133882644.

The previous prime is 511352505119. The next prime is 511352505137. The reversal of 511352505121 is 121505253115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 511352505121 - 2¹ = 511352505119 is a prime.

It is a super-2 number, since 2×511352505121² (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 (511352505721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109307731 + ... + 109312408.

It is an arithmetic number, because the mean of its divisors is an integer number (127892781900).

Almost surely, 2^511352505121 is an apocalyptic number.

It is an amenable number.

511352505121 is a deficient number, since it is larger than the sum of its proper divisors (218622479).

511352505121 is a wasteful number, since it uses less digits than its factorization.

511352505121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218622478.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 511352505121 its reverse (121505253115), we get a palindrome (632857758236).

The spelling of 511352505121 in words is "five hundred eleven billion, three hundred fifty-two million, five hundred five thousand, one hundred twenty-one".