511566406040 has 16 divisors (see below), whose sum is σ = 1151024413680. Its totient is φ = 204626562400.

The previous prime is 511566406037. The next prime is 511566406063. The reversal of 511566406040 is 40604665115.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 511566405985 and 511566406003.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6394580036 + ... + 6394580115.

It is an arithmetic number, because the mean of its divisors is an integer number (71939025855).

Almost surely, 2^511566406040 is an apocalyptic number.

It is an amenable number.

511566406040 is an abundant number, since it is smaller than the sum of its proper divisors (639458007640).

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

511566406040 is a wasteful number, since it uses less digits than its factorization.

511566406040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12789160162 (or 12789160158 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 511566406040 in words is "five hundred eleven billion, five hundred sixty-six million, four hundred six thousand, forty".