406222137726 has 16 divisors (see below), whose sum is σ = 812465472000. Its totient is φ = 135403846488.

The previous prime is 406222137721. The next prime is 406222137749. The reversal of 406222137726 is 627731222604.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406222137721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628396 + ... + 1098783.

It is an arithmetic number, because the mean of its divisors is an integer number (50779092000).

Almost surely, 2^406222137726 is an apocalyptic number.

406222137726 is an abundant number, since it is smaller than the sum of its proper divisors (406243334274).

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

406222137726 is a wasteful number, since it uses less digits than its factorization.

406222137726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766383.

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 406222137726 in words is "four hundred six billion, two hundred twenty-two million, one hundred thirty-seven thousand, seven hundred twenty-six".