201564051205 has 16 divisors (see below), whose sum is σ = 266046383808. Its totient is φ = 146592032400.

The previous prime is 201564051203. The next prime is 201564051233. The reversal of 201564051205 is 502150465102.

It is not a de Polignac number, because 201564051205 - 2¹ = 201564051203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201564051203) 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, 15137151 + ... + 15150460.

It is an arithmetic number, because the mean of its divisors is an integer number (16627898988).

Almost surely, 2^201564051205 is an apocalyptic number.

It is an amenable number.

201564051205 is a deficient number, since it is larger than the sum of its proper divisors (64482332603).

201564051205 is an equidigital number, since it uses as much as digits as its factorization.

201564051205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30287649 (or 30287627 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 201564051205 in words is "two hundred one billion, five hundred sixty-four million, fifty-one thousand, two hundred five".