401033533040 has 320 divisors, whose sum is σ = 1104487308288. Its totient is φ = 132599808000.

The previous prime is 401033533039. The next prime is 401033533049. The reversal of 401033533040 is 40335330104.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401033533049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 367582895 + ... + 367583985.

Almost surely, 2^401033533040 is an apocalyptic number.

401033533040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401033533040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552243654144).

401033533040 is an abundant number, since it is smaller than the sum of its proper divisors (703453775248).

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

401033533040 is a wasteful number, since it uses less digits than its factorization.

401033533040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 401033533040 its reverse (40335330104), we get a palindrome (441368863144).

The spelling of 401033533040 in words is "four hundred one billion, thirty-three million, five hundred thirty-three thousand, forty".