516366783953 has 4 divisors (see below), whose sum is σ = 522168658020. Its totient is φ = 510564909888.

The previous prime is 516366783949. The next prime is 516366783971. The reversal of 516366783953 is 359387663615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177588073744 + 338778710209 = 421412^2 + 582047^2 .

It is a cyclic number.

It is not a de Polignac number, because 516366783953 - 2² = 516366783949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (516366783943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2900936900 + ... + 2900937077.

It is an arithmetic number, because the mean of its divisors is an integer number (130542164505).

Almost surely, 2^516366783953 is an apocalyptic number.

It is an amenable number.

516366783953 is a deficient number, since it is larger than the sum of its proper divisors (5801874067).

516366783953 is an equidigital number, since it uses as much as digits as its factorization.

516366783953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5801874066.

The product of its digits is 73483200, while the sum is 62.

The spelling of 516366783953 in words is "five hundred sixteen billion, three hundred sixty-six million, seven hundred eighty-three thousand, nine hundred fifty-three".