211172749055 has 16 divisors (see below), whose sum is σ = 274857849504. Its totient is φ = 155122590720.

The previous prime is 211172749043. The next prime is 211172749063. The reversal of 211172749055 is 550947271112.

It is not a de Polignac number, because 211172749055 - 2¹⁴ = 211172732671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211172748997 and 211172749015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30293897 + ... + 30300866.

It is an arithmetic number, because the mean of its divisors is an integer number (17178615594).

Almost surely, 2^211172749055 is an apocalyptic number.

211172749055 is a deficient number, since it is larger than the sum of its proper divisors (63685100449).

211172749055 is a wasteful number, since it uses less digits than its factorization.

211172749055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60594826.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 211172749055 in words is "two hundred eleven billion, one hundred seventy-two million, seven hundred forty-nine thousand, fifty-five".