400340433215 has 4 divisors (see below), whose sum is σ = 480408519864. Its totient is φ = 320272346568.

The previous prime is 400340433173. The next prime is 400340433277. The reversal of 400340433215 is 512334043004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400340433215 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, 40034043317 + ... + 40034043326.

It is an arithmetic number, because the mean of its divisors is an integer number (120102129966).

Almost surely, 2^400340433215 is an apocalyptic number.

400340433215 is a deficient number, since it is larger than the sum of its proper divisors (80068086649).

400340433215 is an equidigital number, since it uses as much as digits as its factorization.

400340433215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80068086648.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 400340433215 its reverse (512334043004), we get a palindrome (912674476219).

The spelling of 400340433215 in words is "four hundred billion, three hundred forty million, four hundred thirty-three thousand, two hundred fifteen".