201605201049 has 16 divisors (see below), whose sum is σ = 307769566208. Its totient is φ = 114992356752.

The previous prime is 201605201023. The next prime is 201605201051. The reversal of 201605201049 is 940102506102.

It is not a de Polignac number, because 201605201049 - 2²⁸ = 201336765593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201605202049) 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, 8763877 + ... + 8786850.

It is an arithmetic number, because the mean of its divisors is an integer number (19235597888).

Almost surely, 2^201605201049 is an apocalyptic number.

It is an amenable number.

201605201049 is a deficient number, since it is larger than the sum of its proper divisors (106164365159).

201605201049 is a wasteful number, since it uses less digits than its factorization.

201605201049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17551284.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 201605201049 in words is "two hundred one billion, six hundred five million, two hundred one thousand, forty-nine".