516466421764 has 6 divisors (see below), whose sum is σ = 903816238094. Its totient is φ = 258233210880.

The previous prime is 516466421761. The next prime is 516466421771. The reversal of 516466421764 is 467124664615.

It can be written as a sum of positive squares in only one way, i.e., 437196019264 + 79270402500 = 661208^2 + 281550^2 .

It is not an unprimeable number, because it can be changed into a prime (516466421761) 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 as a sum of consecutive naturals, namely, 64558302717 + ... + 64558302724.

Almost surely, 2^516466421764 is an apocalyptic number.

It is an amenable number.

516466421764 is a deficient number, since it is larger than the sum of its proper divisors (387349816330).

516466421764 is a wasteful number, since it uses less digits than its factorization.

516466421764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129116605445 (or 129116605443 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 52.

The spelling of 516466421764 in words is "five hundred sixteen billion, four hundred sixty-six million, four hundred twenty-one thousand, seven hundred sixty-four".