211434857253192 has 128 divisors (see below), whose sum is σ = 554727700869120. Its totient is φ = 67069205280000.

The previous prime is 211434857253187. The next prime is 211434857253239. The reversal of 211434857253192 is 291352758434112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174168903 + ... + 175378665.

It is an arithmetic number, because the mean of its divisors is an integer number (4333810163040).

Almost surely, 2^{211434857253192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211434857253192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277363850434560).

211434857253192 is an abundant number, since it is smaller than the sum of its proper divisors (343292843615928).

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

211434857253192 is a wasteful number, since it uses less digits than its factorization.

211434857253192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213715 (or 1213711 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 211434857253192 in words is "two hundred eleven trillion, four hundred thirty-four billion, eight hundred fifty-seven million, two hundred fifty-three thousand, one hundred ninety-two".