211274157249 has 10 divisors (see below), whose sum is σ = 315607074530. Its totient is φ = 140849438112.

The previous prime is 211274157203. The next prime is 211274157271. The reversal of 211274157249 is 942751472112.

211274157249 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 74 + 1 + 572 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 153413222400 + 57860934849 = 391680^2 + 240543^2 .

It is not a de Polignac number, because 211274157249 - 2¹⁹ = 211273632961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211274157049) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1304161384 + ... + 1304161545.

It is an arithmetic number, because the mean of its divisors is an integer number (31560707453).

Almost surely, 2^211274157249 is an apocalyptic number.

It is an amenable number.

211274157249 is a deficient number, since it is larger than the sum of its proper divisors (104332917281).

211274157249 is an equidigital number, since it uses as much as digits as its factorization.

211274157249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608322941 (or 2608322932 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The spelling of 211274157249 in words is "two hundred eleven billion, two hundred seventy-four million, one hundred fifty-seven thousand, two hundred forty-nine".