516420663607 has 2 divisors, whose sum is σ = 516420663608. Its totient is φ = 516420663606.

The previous prime is 516420663541. The next prime is 516420663611. The reversal of 516420663607 is 706366024615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 516420663607 - 2³⁵ = 482060925239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516420663677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258210331803 + 258210331804.

It is an arithmetic number, because the mean of its divisors is an integer number (258210331804).

Almost surely, 2^516420663607 is an apocalyptic number.

516420663607 is a deficient number, since it is larger than the sum of its proper divisors (1).

516420663607 is an equidigital number, since it uses as much as digits as its factorization.

516420663607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 516420663607 in words is "five hundred sixteen billion, four hundred twenty million, six hundred sixty-three thousand, six hundred seven".