211612651060 has 48 divisors (see below), whose sum is σ = 445948238736. Its totient is φ = 84348076032.

The previous prime is 211612651039. The next prime is 211612651091. The reversal of 211612651060 is 60156216112.

It can be written as a sum of positive squares in 8 ways, for example, as 13420295716 + 198192355344 = 115846^2 + 445188^2 .

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, 7407364 + ... + 7435876.

It is an arithmetic number, because the mean of its divisors is an integer number (9290588307).

Almost surely, 2^211612651060 is an apocalyptic number.

211612651060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211612651060 is an abundant number, since it is smaller than the sum of its proper divisors (234335587676).

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

211612651060 is a wasteful number, since it uses less digits than its factorization.

211612651060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29812 (or 29810 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 211612651060 its reverse (60156216112), we get a palindrome (271768867172).

The spelling of 211612651060 in words is "two hundred eleven billion, six hundred twelve million, six hundred fifty-one thousand, sixty".