511042041220 has 96 divisors (see below), whose sum is σ = 1112906325888. Its totient is φ = 196961974272.

The previous prime is 511042041187. The next prime is 511042041221. The reversal of 511042041220 is 22140240115.

It is a super-2 number, since 2×511042041220² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511042041191 and 511042041200.

It is not an unprimeable number, because it can be changed into a prime (511042041221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144075487 + ... + 144079033.

It is an arithmetic number, because the mean of its divisors is an integer number (11592774228).

Almost surely, 2^511042041220 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 511042041220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556453162944).

511042041220 is an abundant number, since it is smaller than the sum of its proper divisors (601864284668).

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

511042041220 is a wasteful number, since it uses less digits than its factorization.

511042041220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5429 (or 5427 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 511042041220 its reverse (22140240115), we get a palindrome (533182281335).

The spelling of 511042041220 in words is "five hundred eleven billion, forty-two million, forty-one thousand, two hundred twenty".