210291040406 has 16 divisors (see below), whose sum is σ = 323332672320. Its totient is φ = 102516697920.

The previous prime is 210291040403. The next prime is 210291040499. The reversal of 210291040406 is 604040192012.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210291040403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671966 + ... + 933873.

It is an arithmetic number, because the mean of its divisors is an integer number (20208292020).

Almost surely, 2^210291040406 is an apocalyptic number.

210291040406 is a deficient number, since it is larger than the sum of its proper divisors (113041631914).

210291040406 is a wasteful number, since it uses less digits than its factorization.

210291040406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607479.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 210291040406 in words is "two hundred ten billion, two hundred ninety-one million, forty thousand, four hundred six".