211878994603 has 2 divisors, whose sum is σ = 211878994604. Its totient is φ = 211878994602.

The previous prime is 211878994549. The next prime is 211878994609. The reversal of 211878994603 is 306499878112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211878994603 - 2¹³ = 211878986411 is a prime.

It is not a weakly prime, because it can be changed into another prime (211878994609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105939497301 + 105939497302.

It is an arithmetic number, because the mean of its divisors is an integer number (105939497302).

Almost surely, 2^211878994603 is an apocalyptic number.

211878994603 is a deficient number, since it is larger than the sum of its proper divisors (1).

211878994603 is an equidigital number, since it uses as much as digits as its factorization.

211878994603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 211878994603 in words is "two hundred eleven billion, eight hundred seventy-eight million, nine hundred ninety-four thousand, six hundred three".