401332336660 has 48 divisors (see below), whose sum is σ = 846640528272. Its totient is φ = 159802675200.

The previous prime is 401332336637. The next prime is 401332336661. The reversal of 401332336660 is 66633233104.

It can be written as a sum of positive squares in 8 ways, for example, as 123902592004 + 277429744656 = 351998^2 + 526716^2 .

It is a super-2 number, since 2×401332336660² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401332336661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3829924 + ... + 3933316.

It is an arithmetic number, because the mean of its divisors is an integer number (17638344339).

Almost surely, 2^401332336660 is an apocalyptic number.

It is an amenable number.

401332336660 is an abundant number, since it is smaller than the sum of its proper divisors (445308191612).

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

401332336660 is a wasteful number, since it uses less digits than its factorization.

401332336660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104284 (or 104282 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 37.

Adding to 401332336660 its reverse (66633233104), we get a palindrome (467965569764).

The spelling of 401332336660 in words is "four hundred one billion, three hundred thirty-two million, three hundred thirty-six thousand, six hundred sixty".