511840671797 has 16 divisors (see below), whose sum is σ = 629975563392. Its totient is φ = 404961387840.

The previous prime is 511840671781. The next prime is 511840671809. The reversal of 511840671797 is 797176048115.

It is a cyclic number.

It is not a de Polignac number, because 511840671797 - 2⁴ = 511840671781 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511840671767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4777022 + ... + 4882992.

It is an arithmetic number, because the mean of its divisors is an integer number (39373472712).

Almost surely, 2^511840671797 is an apocalyptic number.

It is an amenable number.

511840671797 is a deficient number, since it is larger than the sum of its proper divisors (118134891595).

511840671797 is a wasteful number, since it uses less digits than its factorization.

511840671797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159068.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 511840671797 in words is "five hundred eleven billion, eight hundred forty million, six hundred seventy-one thousand, seven hundred ninety-seven".