401033205540 has 144 divisors (see below), whose sum is σ = 1327502554560. Its totient is φ = 97187408640.

The previous prime is 401033205511. The next prime is 401033205557. The reversal of 401033205540 is 45502330104.

401033205540 is a `hidden beast` number, since 4 + 0 + 103 + 3 + 2 + 0 + 554 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6123247 + ... + 6188393.

It is an arithmetic number, because the mean of its divisors is an integer number (9218767740).

Almost surely, 2^401033205540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401033205540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663751277280).

401033205540 is an abundant number, since it is smaller than the sum of its proper divisors (926469349020).

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

401033205540 is a wasteful number, since it uses less digits than its factorization.

401033205540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68282 (or 68277 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 401033205540 its reverse (45502330104), we get a palindrome (446535535644).

The spelling of 401033205540 in words is "four hundred one billion, thirty-three million, two hundred five thousand, five hundred forty".