401040601652 has 12 divisors (see below), whose sum is σ = 701857259460. Its totient is φ = 200509956096.

The previous prime is 401040601613. The next prime is 401040601657. The reversal of 401040601652 is 256106040104.

It can be written as a sum of positive squares in 2 ways, for example, as 381002500516 + 20038101136 = 617254^2 + 141556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401040601657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498627 + ... + 2654282.

It is an arithmetic number, because the mean of its divisors is an integer number (58488104955).

Almost surely, 2^401040601652 is an apocalyptic number.

It is an amenable number.

401040601652 is a deficient number, since it is larger than the sum of its proper divisors (300816657808).

401040601652 is a wasteful number, since it uses less digits than its factorization.

401040601652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172370 (or 5172368 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 401040601652 its reverse (256106040104), we get a palindrome (657146641756).

The spelling of 401040601652 in words is "four hundred one billion, forty million, six hundred one thousand, six hundred fifty-two".