40000243361 has 32 divisors (see below), whose sum is σ = 44783843328. Its totient is φ = 35478558720.

The previous prime is 40000243357. The next prime is 40000243399. The reversal of 40000243361 is 16334200004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40000243361 - 2² = 40000243357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40000243301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45095660 + ... + 45096546.

It is an arithmetic number, because the mean of its divisors is an integer number (1399495104).

Almost surely, 2^40000243361 is an apocalyptic number.

It is an amenable number.

40000243361 is a deficient number, since it is larger than the sum of its proper divisors (4783599967).

40000243361 is a wasteful number, since it uses less digits than its factorization.

40000243361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 40000243361 its reverse (16334200004), we get a palindrome (56334443365).

The spelling of 40000243361 in words is "forty billion, two hundred forty-three thousand, three hundred sixty-one".