511225010164 has 36 divisors (see below), whose sum is σ = 993105188964. Its totient is φ = 230074240000.

The previous prime is 511225010159. The next prime is 511225010173. The reversal of 511225010164 is 461010522115.

It can be written as a sum of positive squares in 2 ways, for example, as 382552146064 + 128672864100 = 618508^2 + 358710^2 .

It is a super-2 number, since 2×511225010164² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5180077 + ... + 5277844.

It is an arithmetic number, because the mean of its divisors is an integer number (27586255249).

Almost surely, 2^511225010164 is an apocalyptic number.

It is an amenable number.

511225010164 is a deficient number, since it is larger than the sum of its proper divisors (481880178800).

511225010164 is a wasteful number, since it uses less digits than its factorization.

511225010164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458048 (or 10458035 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 511225010164 its reverse (461010522115), we get a palindrome (972235532279).

The spelling of 511225010164 in words is "five hundred eleven billion, two hundred twenty-five million, ten thousand, one hundred sixty-four".