401303664164 has 96 divisors (see below), whose sum is σ = 823203876096. Its totient is φ = 169510440960.

The previous prime is 401303664163. The next prime is 401303664191. The reversal of 401303664164 is 461466303104.

It is a happy number.

It is a super-2 number, since 2×401303664164² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401303664163) 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, 4537979 + ... + 4625565.

It is an arithmetic number, because the mean of its divisors is an integer number (8575040376).

Almost surely, 2^401303664164 is an apocalyptic number.

It is an amenable number.

401303664164 is an abundant number, since it is smaller than the sum of its proper divisors (421900211932).

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

401303664164 is a wasteful number, since it uses less digits than its factorization.

401303664164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87765 (or 87763 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

Adding to 401303664164 its reverse (461466303104), we get a palindrome (862769967268).

The spelling of 401303664164 in words is "four hundred one billion, three hundred three million, six hundred sixty-four thousand, one hundred sixty-four".