212866615732 has 12 divisors (see below), whose sum is σ = 373185372420. Its totient is φ = 106242223616.

The previous prime is 212866615697. The next prime is 212866615763. The reversal of 212866615732 is 237516668212.

It can be written as a sum of positive squares in 2 ways, for example, as 65415223696 + 147451392036 = 255764^2 + 383994^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47768557 + ... + 47773012.

It is an arithmetic number, because the mean of its divisors is an integer number (31098781035).

Almost surely, 2^212866615732 is an apocalyptic number.

It is an amenable number.

212866615732 is a deficient number, since it is larger than the sum of its proper divisors (160318756688).

212866615732 is a wasteful number, since it uses less digits than its factorization.

212866615732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95542130 (or 95542128 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The spelling of 212866615732 in words is "two hundred twelve billion, eight hundred sixty-six million, six hundred fifteen thousand, seven hundred thirty-two".