511376663664 has 50 divisors (see below), whose sum is σ = 1480072430760. Its totient is φ = 170458887456.

The previous prime is 511376663663. The next prime is 511376663669. The reversal of 511376663664 is 466366673115.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 511376663664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511376663663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 197289084 + ... + 197291675.

Almost surely, 2^511376663664 is an apocalyptic number.

511376663664 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

511376663664 is an abundant number, since it is smaller than the sum of its proper divisors (968695767096).

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

511376663664 is a wasteful number, since it uses less digits than its factorization.

511376663664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394580779 (or 394580764 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 54.

The spelling of 511376663664 in words is "five hundred eleven billion, three hundred seventy-six million, six hundred sixty-three thousand, six hundred sixty-four".