516881684623 has 2 divisors, whose sum is σ = 516881684624. Its totient is φ = 516881684622.

The previous prime is 516881684573. The next prime is 516881684639. The reversal of 516881684623 is 326486188615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 516881684623 - 2²⁹ = 516344813711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516881684023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258440842311 + 258440842312.

It is an arithmetic number, because the mean of its divisors is an integer number (258440842312).

Almost surely, 2^516881684623 is an apocalyptic number.

516881684623 is a deficient number, since it is larger than the sum of its proper divisors (1).

516881684623 is an equidigital number, since it uses as much as digits as its factorization.

516881684623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13271040, while the sum is 58.

The spelling of 516881684623 in words is "five hundred sixteen billion, eight hundred eighty-one million, six hundred eighty-four thousand, six hundred twenty-three".