400210012005 has 32 divisors (see below), whose sum is σ = 656049518208. Its totient is φ = 208209024000.

The previous prime is 400210012003. The next prime is 400210012031. The reversal of 400210012005 is 500210012004.

It is not a de Polignac number, because 400210012005 - 2¹ = 400210012003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400210012003) 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, 4538697 + ... + 4626033.

It is an arithmetic number, because the mean of its divisors is an integer number (20501547444).

Almost surely, 2^400210012005 is an apocalyptic number.

It is an amenable number.

400210012005 is a deficient number, since it is larger than the sum of its proper divisors (255839506203).

400210012005 is a wasteful number, since it uses less digits than its factorization.

400210012005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94837.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 400210012005 its reverse (500210012004), we get a palindrome (900420024009).

Subtracting 400210012005 from its reverse (500210012004), we obtain a palindrome (99999999999).

The spelling of 400210012005 in words is "four hundred billion, two hundred ten million, twelve thousand, five".