401043221436 has 96 divisors (see below), whose sum is σ = 1100370555648. Its totient is φ = 112077135360.

The previous prime is 401043221431. The next prime is 401043221443. The reversal of 401043221436 is 634122340104.

401043221436 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401043221431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1775931 + ... + 1988973.

It is an arithmetic number, because the mean of its divisors is an integer number (11462193288).

Almost surely, 2^401043221436 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 401043221436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550185277824).

401043221436 is an abundant number, since it is smaller than the sum of its proper divisors (699327334212).

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

401043221436 is a wasteful number, since it uses less digits than its factorization.

401043221436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214171 (or 214169 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 401043221436 in words is "four hundred one billion, forty-three million, two hundred twenty-one thousand, four hundred thirty-six".