211405672471 has 24 divisors (see below), whose sum is σ = 259104628224. Its totient is φ = 171643515120.

The previous prime is 211405672453. The next prime is 211405672501. The reversal of 211405672471 is 174276504112.

It is not a de Polignac number, because 211405672471 - 2⁹ = 211405671959 is a prime.

It is a super-3 number, since 3×211405672471³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211405672271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794515 + ... + 1026676.

It is an arithmetic number, because the mean of its divisors is an integer number (10796026176).

Almost surely, 2^211405672471 is an apocalyptic number.

211405672471 is a deficient number, since it is larger than the sum of its proper divisors (47698955753).

211405672471 is a wasteful number, since it uses less digits than its factorization.

211405672471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821331 (or 1821324 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 211405672471 in words is "two hundred eleven billion, four hundred five million, six hundred seventy-two thousand, four hundred seventy-one".