206199981552 has 80 divisors (see below), whose sum is σ = 560807856000. Its totient is φ = 65105494272.

The previous prime is 206199981529. The next prime is 206199981653. The reversal of 206199981552 is 255189991602.

206199981552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 206199981492 and 206199981501.

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, 7481974 + ... + 7509482.

It is an arithmetic number, because the mean of its divisors is an integer number (7010098200).

Almost surely, 2^206199981552 is an apocalyptic number.

It is an amenable number.

206199981552 is an abundant number, since it is smaller than the sum of its proper divisors (354607874448).

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

206199981552 is a wasteful number, since it uses less digits than its factorization.

206199981552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35758 (or 35752 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 57.

The spelling of 206199981552 in words is "two hundred six billion, one hundred ninety-nine million, nine hundred eighty-one thousand, five hundred fifty-two".