406211536020 has 96 divisors (see below), whose sum is σ = 1146453428736. Its totient is φ = 107460662400.

The previous prime is 406211536009. The next prime is 406211536037. The reversal of 406211536020 is 20635112604.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30891087 + ... + 30904233.

It is an arithmetic number, because the mean of its divisors is an integer number (11942223216).

Almost surely, 2^406211536020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406211536020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573226714368).

406211536020 is an abundant number, since it is smaller than the sum of its proper divisors (740241892716).

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

406211536020 is a wasteful number, since it uses less digits than its factorization.

406211536020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17221 (or 17219 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 406211536020 its reverse (20635112604), we get a palindrome (426846648624).

The spelling of 406211536020 in words is "four hundred six billion, two hundred eleven million, five hundred thirty-six thousand, twenty".