401232242605644 has 144 divisors (see below), whose sum is σ = 1070042853175296. Its totient is φ = 126578241216000.

The previous prime is 401232242605643. The next prime is 401232242605687. The reversal of 401232242605644 is 446506242232104.

401232242605644 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 3 + 2 + 24 + 2 + 60 + 564 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 401232242605644.

It is not an unprimeable number, because it can be changed into a prime (401232242605643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65081319 + ... + 70979169.

Almost surely, 2^{401232242605644} 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 401232242605644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535021426587648).

401232242605644 is an abundant number, since it is smaller than the sum of its proper divisors (668810610569652).

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

401232242605644 is a wasteful number, since it uses less digits than its factorization.

401232242605644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5899236 (or 5899231 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

Adding to 401232242605644 its reverse (446506242232104), we get a palindrome (847738484837748).

The spelling of 401232242605644 in words is "four hundred one trillion, two hundred thirty-two billion, two hundred forty-two million, six hundred five thousand, six hundred forty-four".