216978683003 has 2 divisors, whose sum is σ = 216978683004. Its totient is φ = 216978683002.

The previous prime is 216978682993. The next prime is 216978683027. The reversal of 216978683003 is 300386879612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216978683003 - 2¹⁰ = 216978681979 is a prime.

It is a super-2 number, since 2×216978683003² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216978689003) 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 as a sum of consecutive naturals, namely, 108489341501 + 108489341502.

It is an arithmetic number, because the mean of its divisors is an integer number (108489341502).

Almost surely, 2^216978683003 is an apocalyptic number.

216978683003 is a deficient number, since it is larger than the sum of its proper divisors (1).

216978683003 is an equidigital number, since it uses as much as digits as its factorization.

216978683003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 216978683003 in words is "two hundred sixteen billion, nine hundred seventy-eight million, six hundred eighty-three thousand, three".