40243112323105 has 4 divisors (see below), whose sum is σ = 48291734787732. Its totient is φ = 32194489858480.

The previous prime is 40243112323093. The next prime is 40243112323111. The reversal of 40243112323105 is 50132321134204.

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 13166034021009 + 27077078302096 = 3628503^2 + 5203564^2 .

It is not a de Polignac number, because 40243112323105 - 2⁷ = 40243112322977 is a prime.

It is a Duffinian 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, 4024311232306 + ... + 4024311232315.

It is an arithmetic number, because the mean of its divisors is an integer number (12072933696933).

Almost surely, 2^{40243112323105} is an apocalyptic number.

It is an amenable number.

40243112323105 is a deficient number, since it is larger than the sum of its proper divisors (8048622464627).

40243112323105 is an equidigital number, since it uses as much as digits as its factorization.

40243112323105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8048622464626.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 40243112323105 its reverse (50132321134204), we get a palindrome (90375433457309).

The spelling of 40243112323105 in words is "forty trillion, two hundred forty-three billion, one hundred twelve million, three hundred twenty-three thousand, one hundred five".