40243243461 has 8 divisors (see below), whose sum is σ = 53742696384. Its totient is φ = 26786309760.

The previous prime is 40243243459. The next prime is 40243243471. The reversal of 40243243461 is 16434234204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40243243461 - 2¹ = 40243243459 is a prime.

It is a super-2 number, since 2×40243243461² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243243471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10627596 + ... + 10631381.

It is an arithmetic number, because the mean of its divisors is an integer number (6717837048).

Almost surely, 2^40243243461 is an apocalyptic number.

It is an amenable number.

40243243461 is a deficient number, since it is larger than the sum of its proper divisors (13499452923).

40243243461 is a wasteful number, since it uses less digits than its factorization.

40243243461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21259611.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 40243243461 its reverse (16434234204), we get a palindrome (56677477665).

The spelling of 40243243461 in words is "forty billion, two hundred forty-three million, two hundred forty-three thousand, four hundred sixty-one".