511125056240 has 160 divisors (see below), whose sum is σ = 1243881100800. Its totient is φ = 195096084480.

The previous prime is 511125056207. The next prime is 511125056251. The reversal of 511125056240 is 42650521115.

It is a super-2 number, since 2×511125056240² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511125056197 and 511125056206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85857104 + ... + 85863056.

It is an arithmetic number, because the mean of its divisors is an integer number (7774256880).

Almost surely, 2^511125056240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511125056240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621940550400).

511125056240 is an abundant number, since it is smaller than the sum of its proper divisors (732756044560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511125056240 is a wasteful number, since it uses less digits than its factorization.

511125056240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475 (or 6469 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 511125056240 its reverse (42650521115), we get a palindrome (553775577355).

The spelling of 511125056240 in words is "five hundred eleven billion, one hundred twenty-five million, fifty-six thousand, two hundred forty".