400317040550 has 48 divisors (see below), whose sum is σ = 851012531712. Its totient is φ = 137243028000.

The previous prime is 400317040493. The next prime is 400317040561. The reversal of 400317040550 is 55040713004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8594825 + ... + 8641275.

It is an arithmetic number, because the mean of its divisors is an integer number (17729427744).

Almost surely, 2^400317040550 is an apocalyptic number.

400317040550 is an abundant number, since it is smaller than the sum of its proper divisors (450695491162).

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

400317040550 is a wasteful number, since it uses less digits than its factorization.

400317040550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71093 (or 71088 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 400317040550 its reverse (55040713004), we get a palindrome (455357753554).

The spelling of 400317040550 in words is "four hundred billion, three hundred seventeen million, forty thousand, five hundred fifty".