211711346816 has 64 divisors (see below), whose sum is σ = 450593772000. Its totient is φ = 98787465216.

The previous prime is 211711346813. The next prime is 211711346843. The reversal of 211711346816 is 618643117112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (211711346813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486701 + ... + 812588.

Almost surely, 2^211711346816 is an apocalyptic number.

It is an amenable number.

211711346816 is an abundant number, since it is smaller than the sum of its proper divisors (238882425184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211711346816 is a wasteful number, since it uses less digits than its factorization.

211711346816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299389 (or 1299377 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The spelling of 211711346816 in words is "two hundred eleven billion, seven hundred eleven million, three hundred forty-six thousand, eight hundred sixteen".