201039665471 has 4 divisors (see below), whose sum is σ = 201049657344. Its totient is φ = 201029673600.

The previous prime is 201039665341. The next prime is 201039665597. The reversal of 201039665471 is 174566930102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174566930102 = 2 ⋅87283465051.

It is a cyclic number.

It is not a de Polignac number, because 201039665471 - 2¹⁰ = 201039664447 is a prime.

It is a super-3 number, since 3×201039665471³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201039662471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4965695 + ... + 5006016.

It is an arithmetic number, because the mean of its divisors is an integer number (50262414336).

Almost surely, 2^201039665471 is an apocalyptic number.

201039665471 is a deficient number, since it is larger than the sum of its proper divisors (9991873).

201039665471 is an equidigital number, since it uses as much as digits as its factorization.

201039665471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991872.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 201039665471 in words is "two hundred one billion, thirty-nine million, six hundred sixty-five thousand, four hundred seventy-one".