211653665032 has 8 divisors (see below), whose sum is σ = 396850621950. Its totient is φ = 105826832512.

The previous prime is 211653665023. The next prime is 211653665053. The reversal of 211653665032 is 230566356112.

It can be written as a sum of positive squares in only one way, i.e., 166893492676 + 44760172356 = 408526^2 + 211566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×211653665032² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13228354057 + ... + 13228354072.

Almost surely, 2^211653665032 is an apocalyptic number.

It is an amenable number.

211653665032 is a deficient number, since it is larger than the sum of its proper divisors (185196956918).

211653665032 is a wasteful number, since it uses less digits than its factorization.

211653665032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26456708135 (or 26456708131 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 211653665032 in words is "two hundred eleven billion, six hundred fifty-three million, six hundred sixty-five thousand, thirty-two".