511043204040 has 64 divisors (see below), whose sum is σ = 1534159785600. Its totient is φ = 136186616832.

The previous prime is 511043204017. The next prime is 511043204051. The reversal of 511043204040 is 40402340115.

It is a super-2 number, since 2×511043204040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 511043204040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1251372 + ... + 1608731.

It is an arithmetic number, because the mean of its divisors is an integer number (23971246650).

Almost surely, 2^511043204040 is an apocalyptic number.

It is an amenable number.

511043204040 is an abundant number, since it is smaller than the sum of its proper divisors (1023116581560).

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

511043204040 is a wasteful number, since it uses less digits than its factorization.

511043204040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861606 (or 2861602 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 511043204040 its reverse (40402340115), we get a palindrome (551445544155).

The spelling of 511043204040 in words is "five hundred eleven billion, forty-three million, two hundred four thousand, forty".