201631682658 has 16 divisors (see below), whose sum is σ = 460872417600. Its totient is φ = 57609052176.

The previous prime is 201631682569. The next prime is 201631682701. The reversal of 201631682658 is 856286136102.

It is a happy number.

201631682658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 2400377133 + ... + 2400377216.

It is an arithmetic number, because the mean of its divisors is an integer number (28804526100).

Almost surely, 2^201631682658 is an apocalyptic number.

201631682658 is an abundant number, since it is smaller than the sum of its proper divisors (259240734942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201631682658 is a wasteful number, since it uses less digits than its factorization.

201631682658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800754361.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 201631682658 in words is "two hundred one billion, six hundred thirty-one million, six hundred eighty-two thousand, six hundred fifty-eight".