400113552005 has 4 divisors (see below), whose sum is σ = 480136262412. Its totient is φ = 320090841600.

The previous prime is 400113551989. The next prime is 400113552029. The reversal of 400113552005 is 500255311004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41310156001 + 358803396004 = 203249^2 + 599002^2 .

It is not a de Polignac number, because 400113552005 - 2⁴ = 400113551989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40011355196 + ... + 40011355205.

It is an arithmetic number, because the mean of its divisors is an integer number (120034065603).

Almost surely, 2^400113552005 is an apocalyptic number.

It is an amenable number.

400113552005 is a deficient number, since it is larger than the sum of its proper divisors (80022710407).

400113552005 is an equidigital number, since it uses as much as digits as its factorization.

400113552005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80022710406.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 400113552005 its reverse (500255311004), we get a palindrome (900368863009).

The spelling of 400113552005 in words is "four hundred billion, one hundred thirteen million, five hundred fifty-two thousand, five".