511312042112 has 64 divisors (see below), whose sum is σ = 1063603612800. Its totient is φ = 244533187584.

The previous prime is 511312042081. The next prime is 511312042123. The reversal of 511312042112 is 211240213115.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×511312042112² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246488 + ... + 1040855.

It is an arithmetic number, because the mean of its divisors is an integer number (16618806450).

Almost surely, 2^511312042112 is an apocalyptic number.

It is an amenable number.

511312042112 is an abundant number, since it is smaller than the sum of its proper divisors (552291570688).

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

511312042112 is a wasteful number, since it uses less digits than its factorization.

511312042112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287493 (or 1287481 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 511312042112 its reverse (211240213115), we get a palindrome (722552255227).

The spelling of 511312042112 in words is "five hundred eleven billion, three hundred twelve million, forty-two thousand, one hundred twelve".