400004551005 has 16 divisors (see below), whose sum is σ = 644892836544. Its totient is φ = 211707242240.

The previous prime is 400004550997. The next prime is 400004551019. The reversal of 400004551005 is 500155400004.

It is not a de Polignac number, because 400004551005 - 2³ = 400004550997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101780364 + ... + 101784293.

It is an arithmetic number, because the mean of its divisors is an integer number (40305802284).

Almost surely, 2^400004551005 is an apocalyptic number.

It is an amenable number.

400004551005 is a deficient number, since it is larger than the sum of its proper divisors (244888285539).

400004551005 is a wasteful number, since it uses less digits than its factorization.

400004551005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203564796.

The product of its (nonzero) digits is 2000, while the sum is 24.

Adding to 400004551005 its reverse (500155400004), we get a palindrome (900159951009).

The spelling of 400004551005 in words is "four hundred billion, four million, five hundred fifty-one thousand, five".