201706775257 has 8 divisors (see below), whose sum is σ = 217311486336. Its totient is φ = 186114750672.

The previous prime is 201706775251. The next prime is 201706775341. The reversal of 201706775257 is 752577607102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201706775257 - 2⁷ = 201706775129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201706775257.

It is not an unprimeable number, because it can be changed into a prime (201706775251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138583 + ... + 3202204.

It is an arithmetic number, because the mean of its divisors is an integer number (27163935792).

Almost surely, 2^201706775257 is an apocalyptic number.

It is an amenable number.

201706775257 is a deficient number, since it is larger than the sum of its proper divisors (15604711079).

201706775257 is a wasteful number, since it uses less digits than its factorization.

201706775257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343247.

The product of its (nonzero) digits is 1440600, while the sum is 49.

The spelling of 201706775257 in words is "two hundred one billion, seven hundred six million, seven hundred seventy-five thousand, two hundred fifty-seven".