211938144245 has 8 divisors (see below), whose sum is σ = 254338406784. Its totient is φ = 169542092944.

The previous prime is 211938144239. The next prime is 211938144263. The reversal of 211938144245 is 542441839112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211938144245 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211938144196 and 211938144205.

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, 941009 + ... + 1144278.

It is an arithmetic number, because the mean of its divisors is an integer number (31792300848).

Almost surely, 2^211938144245 is an apocalyptic number.

It is an amenable number.

211938144245 is a deficient number, since it is larger than the sum of its proper divisors (42400262539).

211938144245 is a wasteful number, since it uses less digits than its factorization.

211938144245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105619.

The product of its digits is 276480, while the sum is 44.

The spelling of 211938144245 in words is "two hundred eleven billion, nine hundred thirty-eight million, one hundred forty-four thousand, two hundred forty-five".