516466421765 has 24 divisors (see below), whose sum is σ = 712670128128. Its totient is φ = 351975080160.

The previous prime is 516466421761. The next prime is 516466421771. The reversal of 516466421765 is 567124664615.

It is not a de Polignac number, because 516466421765 - 2² = 516466421761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516466421761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652220 + ... + 1207610.

It is an arithmetic number, because the mean of its divisors is an integer number (29694588672).

Almost surely, 2^516466421765 is an apocalyptic number.

It is an amenable number.

516466421765 is a deficient number, since it is larger than the sum of its proper divisors (196203706363).

516466421765 is an equidigital number, since it uses as much as digits as its factorization.

516466421765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555729 (or 555566 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 53.

The spelling of 516466421765 in words is "five hundred sixteen billion, four hundred sixty-six million, four hundred twenty-one thousand, seven hundred sixty-five".