216411761803 has 2 divisors, whose sum is σ = 216411761804. Its totient is φ = 216411761802.

The previous prime is 216411761801. The next prime is 216411761807. The reversal of 216411761803 is 308167114612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216411761803 - 2¹ = 216411761801 is a prime.

Together with 216411761801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (216411761801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108205880901 + 108205880902.

It is an arithmetic number, because the mean of its divisors is an integer number (108205880902).

Almost surely, 2^216411761803 is an apocalyptic number.

216411761803 is a deficient number, since it is larger than the sum of its proper divisors (1).

216411761803 is an equidigital number, since it uses as much as digits as its factorization.

216411761803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 216411761803 in words is "two hundred sixteen billion, four hundred eleven million, seven hundred sixty-one thousand, eight hundred three".