201693954085 has 16 divisors (see below), whose sum is σ = 260663664240. Its totient is φ = 148935790080.

The previous prime is 201693954083. The next prime is 201693954103. The reversal of 201693954085 is 580459396102.

201693954085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 126820029924 + 74873924161 = 356118^2 + 273631^2 .

It is not a de Polignac number, because 201693954085 - 2¹ = 201693954083 is a prime.

It is a super-2 number, since 2×201693954085² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201693954083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1470225 + ... + 1601545.

It is an arithmetic number, because the mean of its divisors is an integer number (16291479015).

Almost surely, 2^201693954085 is an apocalyptic number.

It is an amenable number.

201693954085 is a deficient number, since it is larger than the sum of its proper divisors (58969710155).

201693954085 is a wasteful number, since it uses less digits than its factorization.

201693954085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154968.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 201693954085 in words is "two hundred one billion, six hundred ninety-three million, nine hundred fifty-four thousand, eighty-five".