201631682657 has 8 divisors (see below), whose sum is σ = 207460693440. Its totient is φ = 195854485680.

The previous prime is 201631682569. The next prime is 201631682701. The reversal of 201631682657 is 756286136102.

201631682657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201631682657 - 2¹⁴ = 201631666273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201631612657) 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 7 ways as a sum of consecutive naturals, for example, 12945557 + ... + 12961122.

It is an arithmetic number, because the mean of its divisors is an integer number (25932586680).

Almost surely, 2^201631682657 is an apocalyptic number.

It is an amenable number.

201631682657 is a deficient number, since it is larger than the sum of its proper divisors (5829010783).

201631682657 is a wasteful number, since it uses less digits than its factorization.

201631682657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25906903.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 201631682657 in words is "two hundred one billion, six hundred thirty-one million, six hundred eighty-two thousand, six hundred fifty-seven".