210404256601 has 32 divisors (see below), whose sum is σ = 263623737600. Its totient is φ = 163139961600.

The previous prime is 210404256589. The next prime is 210404256631. The reversal of 210404256601 is 106652404012.

It is a happy number.

210404256601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210404256601 - 2¹⁹ = 210403732313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210404256631) 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 31 ways as a sum of consecutive naturals, for example, 12861375 + ... + 12877723.

It is an arithmetic number, because the mean of its divisors is an integer number (8238241800).

Almost surely, 2^210404256601 is an apocalyptic number.

It is an amenable number.

210404256601 is a deficient number, since it is larger than the sum of its proper divisors (53219480999).

210404256601 is a wasteful number, since it uses less digits than its factorization.

210404256601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17185.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 210404256601 in words is "two hundred ten billion, four hundred four million, two hundred fifty-six thousand, six hundred one".