206820387548732 has 12 divisors (see below), whose sum is σ = 361944391654440. Its totient is φ = 103407704218896.

The previous prime is 206820387548659. The next prime is 206820387548741. The reversal of 206820387548732 is 237845783028602.

It is a happy number.

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, 622201943 + ... + 622534254.

It is an arithmetic number, because the mean of its divisors is an integer number (30162032637870).

Almost surely, 2^{206820387548732} is an apocalyptic number.

It is an amenable number.

206820387548732 is a deficient number, since it is larger than the sum of its proper divisors (155124004105708).

206820387548732 is a wasteful number, since it uses less digits than its factorization.

206820387548732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244777740 (or 1244777738 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 65.

The spelling of 206820387548732 in words is "two hundred six trillion, eight hundred twenty billion, three hundred eighty-seven million, five hundred forty-eight thousand, seven hundred thirty-two".