404140134204550 has 48 divisors (see below), whose sum is σ = 752119643261952. Its totient is φ = 161565972365600.

The previous prime is 404140134204511. The next prime is 404140134204551. The reversal of 404140134204550 is 55402431041404.

It is a super-2 number, since 2×404140134204550² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404140134204551) 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, 658155969 + ... + 658769731.

It is an arithmetic number, because the mean of its divisors is an integer number (15669159234624).

Almost surely, 2^{404140134204550} is an apocalyptic number.

404140134204550 is a deficient number, since it is larger than the sum of its proper divisors (347979509057402).

404140134204550 is a wasteful number, since it uses less digits than its factorization.

404140134204550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621093 (or 621088 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 404140134204550 its reverse (55402431041404), we get a palindrome (459542565245954).

The spelling of 404140134204550 in words is "four hundred four trillion, one hundred forty billion, one hundred thirty-four million, two hundred four thousand, five hundred fifty".