211442405308 has 24 divisors (see below), whose sum is σ = 370411776000. Its totient is φ = 105610533168.

The previous prime is 211442405269. The next prime is 211442405323. The reversal of 211442405308 is 803504244112.

It is a congruent number.

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, 18255063 + ... + 18266641.

It is an arithmetic number, because the mean of its divisors is an integer number (15433824000).

Almost surely, 2^211442405308 is an apocalyptic number.

It is an amenable number.

211442405308 is a deficient number, since it is larger than the sum of its proper divisors (158969370692).

211442405308 is a wasteful number, since it uses less digits than its factorization.

211442405308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15969 (or 15967 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 211442405308 in words is "two hundred eleven billion, four hundred forty-two million, four hundred five thousand, three hundred eight".