206402072061 has 16 divisors (see below), whose sum is σ = 278539297344. Its totient is φ = 135938210304.

The previous prime is 206402072029. The next prime is 206402072077. The reversal of 206402072061 is 160270204602.

It is not a de Polignac number, because 206402072061 - 2⁵ = 206402072029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206402074061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474615 + ... + 798788.

It is an arithmetic number, because the mean of its divisors is an integer number (17408706084).

Almost surely, 2^206402072061 is an apocalyptic number.

It is an amenable number.

206402072061 is a deficient number, since it is larger than the sum of its proper divisors (72137225283).

206402072061 is a wasteful number, since it uses less digits than its factorization.

206402072061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274060.

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 206402072061 its reverse (160270204602), we get a palindrome (366672276663).

The spelling of 206402072061 in words is "two hundred six billion, four hundred two million, seventy-two thousand, sixty-one".