511885979830953 has 48 divisors (see below), whose sum is σ = 943723946395776. Its totient is φ = 270005791547520.

The previous prime is 511885979830919. The next prime is 511885979831111. The reversal of 511885979830953 is 359038979588115.

511885979830953 is a `hidden beast` number, since 5 + 1 + 18 + 8 + 597 + 9 + 8 + 3 + 0 + 9 + 5 + 3 = 666.

It is not a de Polignac number, because 511885979830953 - 2⁹ = 511885979830441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (511885979830553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11574300228 + ... + 11574344453.

It is an arithmetic number, because the mean of its divisors is an integer number (19660915549912).

Almost surely, 2^{511885979830953} is an apocalyptic number.

It is an amenable number.

511885979830953 is a deficient number, since it is larger than the sum of its proper divisors (431837966564823).

511885979830953 is a wasteful number, since it uses less digits than its factorization.

511885979830953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23148644716 (or 23148644704 counting only the distinct ones).

The product of its (nonzero) digits is 2939328000, while the sum is 81.

The spelling of 511885979830953 in words is "five hundred eleven trillion, eight hundred eighty-five billion, nine hundred seventy-nine million, eight hundred thirty thousand, nine hundred fifty-three".