210333400040 has 16 divisors (see below), whose sum is σ = 473250150180. Its totient is φ = 84133360000.

The previous prime is 210333400033. The next prime is 210333400073. The reversal of 210333400040 is 40004333012.

It can be written as a sum of positive squares in 2 ways, for example, as 206877606244 + 3455793796 = 454838^2 + 58786^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 210333399985 and 210333400021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2629167461 + ... + 2629167540.

Almost surely, 2^210333400040 is an apocalyptic number.

210333400040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210333400040 is an abundant number, since it is smaller than the sum of its proper divisors (262916750140).

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

210333400040 is a wasteful number, since it uses less digits than its factorization.

210333400040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258335012 (or 5258335008 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 210333400040 its reverse (40004333012), we get a palindrome (250337733052).

The spelling of 210333400040 in words is "two hundred ten billion, three hundred thirty-three million, four hundred thousand, forty".