400002543315 has 12 divisors (see below), whose sum is σ = 693337741824. Its totient is φ = 213334689744.

The previous prime is 400002543287. The next prime is 400002543371. The reversal of 400002543315 is 513345200004.

400002543315 is a `hidden beast` number, since 400 + 0 + 0 + 254 + 3 + 3 + 1 + 5 = 666.

It is not a de Polignac number, because 400002543315 - 2⁶ = 400002543251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4444472659 + ... + 4444472748.

It is an arithmetic number, because the mean of its divisors is an integer number (57778145152).

Almost surely, 2^400002543315 is an apocalyptic number.

400002543315 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

400002543315 is a deficient number, since it is larger than the sum of its proper divisors (293335198509).

400002543315 is a wasteful number, since it uses less digits than its factorization.

400002543315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8888945418 (or 8888945415 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 400002543315 its reverse (513345200004), we get a palindrome (913347743319).

The spelling of 400002543315 in words is "four hundred billion, two million, five hundred forty-three thousand, three hundred fifteen".