206150501677 has 2 divisors, whose sum is σ = 206150501678. Its totient is φ = 206150501676.

The previous prime is 206150501663. The next prime is 206150501701. The reversal of 206150501677 is 776105051602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139562763561 + 66587738116 = 373581^2 + 258046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206150501677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206150801677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103075250838 + 103075250839.

It is an arithmetic number, because the mean of its divisors is an integer number (103075250839).

Almost surely, 2^206150501677 is an apocalyptic number.

It is an amenable number.

206150501677 is a deficient number, since it is larger than the sum of its proper divisors (1).

206150501677 is an equidigital number, since it uses as much as digits as its factorization.

206150501677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 206150501677 in words is "two hundred six billion, one hundred fifty million, five hundred one thousand, six hundred seventy-seven".