53990916866 has 8 divisors (see below), whose sum is σ = 83779009020. Its totient is φ = 26064580528.

The previous prime is 53990916829. The next prime is 53990916883. The reversal of 53990916866 is 66861909935.

It can be written as a sum of positive squares in 2 ways, for example, as 53068033225 + 922883641 = 230365^2 + 30379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 53990916799 and 53990916808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465438881 + ... + 465438996.

Almost surely, 2^53990916866 is an apocalyptic number.

53990916866 is a deficient number, since it is larger than the sum of its proper divisors (29788092154).

53990916866 is a wasteful number, since it uses less digits than its factorization.

53990916866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930877908.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 53990916866 in words is "fifty-three billion, nine hundred ninety million, nine hundred sixteen thousand, eight hundred sixty-six".