211999767968794 has 16 divisors (see below), whose sum is σ = 342516912095232. Its totient is φ = 97830118625328.

The previous prime is 211999767968789. The next prime is 211999767968827. The reversal of 211999767968794 is 497869767999112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663509274 + ... + 663828709.

It is an arithmetic number, because the mean of its divisors is an integer number (21407307005952).

Almost surely, 2^{211999767968794} is an apocalyptic number.

211999767968794 is a deficient number, since it is larger than the sum of its proper divisors (130517144126438).

211999767968794 is a wasteful number, since it uses less digits than its factorization.

211999767968794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327344141.

The product of its digits is 46664771328, while the sum is 94.

The spelling of 211999767968794 in words is "two hundred eleven trillion, nine hundred ninety-nine billion, seven hundred sixty-seven million, nine hundred sixty-eight thousand, seven hundred ninety-four".