511011340444 has 24 divisors (see below), whose sum is σ = 990127813248. Its totient is φ = 228811046640.

The previous prime is 511011340409. The next prime is 511011340451. The reversal of 511011340444 is 444043110115.

It is a super-2 number, since 2×511011340444² (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 7 ways as a sum of consecutive naturals, for example, 86667904 + ... + 86673799.

It is an arithmetic number, because the mean of its divisors is an integer number (41255325552).

Almost surely, 2^511011340444 is an apocalyptic number.

It is an amenable number.

511011340444 is a deficient number, since it is larger than the sum of its proper divisors (479116472804).

511011340444 is a wasteful number, since it uses less digits than its factorization.

511011340444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173341785 (or 173341783 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 511011340444 its reverse (444043110115), we get a palindrome (955054450559).

The spelling of 511011340444 in words is "five hundred eleven billion, eleven million, three hundred forty thousand, four hundred forty-four".