401365400550 has 48 divisors (see below), whose sum is σ = 995969267280. Its totient is φ = 106968077440.

The previous prime is 401365400519. The next prime is 401365400551. The reversal of 401365400550 is 55004563104.

It is a super-2 number, since 2×401365400550² (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 (401365400551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526497 + ... + 1039196.

It is an arithmetic number, because the mean of its divisors is an integer number (20749359735).

Almost surely, 2^401365400550 is an apocalyptic number.

401365400550 is an abundant number, since it is smaller than the sum of its proper divisors (594603866730).

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

401365400550 is a wasteful number, since it uses less digits than its factorization.

401365400550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567417 (or 1567412 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 401365400550 its reverse (55004563104), we get a palindrome (456369963654).

The spelling of 401365400550 in words is "four hundred one billion, three hundred sixty-five million, four hundred thousand, five hundred fifty".