211954012264 has 8 divisors (see below), whose sum is σ = 397413773010. Its totient is φ = 105977006128.

The previous prime is 211954012223. The next prime is 211954012267. The reversal of 211954012264 is 462210459112.

It can be written as a sum of positive squares in only one way, i.e., 207077783364 + 4876228900 = 455058^2 + 69830^2 .

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

It is not an unprimeable number, because it can be changed into a prime (211954012267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13247125759 + ... + 13247125774.

Almost surely, 2^211954012264 is an apocalyptic number.

It is an amenable number.

211954012264 is a deficient number, since it is larger than the sum of its proper divisors (185459760746).

211954012264 is a wasteful number, since it uses less digits than its factorization.

211954012264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26494251539 (or 26494251535 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 211954012264 in words is "two hundred eleven billion, nine hundred fifty-four million, twelve thousand, two hundred sixty-four".