401333405312 has 64 divisors (see below), whose sum is σ = 914163200640. Its totient is φ = 171922283520.

The previous prime is 401333405303. The next prime is 401333405327. The reversal of 401333405312 is 213504333104.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×401333405312² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904237 + ... + 2104467.

It is an arithmetic number, because the mean of its divisors is an integer number (14283800010).

Almost surely, 2^401333405312 is an apocalyptic number.

It is an amenable number.

401333405312 is an abundant number, since it is smaller than the sum of its proper divisors (512829795328).

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

401333405312 is a wasteful number, since it uses less digits than its factorization.

401333405312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202489 (or 202477 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 401333405312 its reverse (213504333104), we get a palindrome (614837738416).

The spelling of 401333405312 in words is "four hundred one billion, three hundred thirty-three million, four hundred five thousand, three hundred twelve".