40400034023243 has 8 divisors (see below), whose sum is σ = 42195179834160. Its totient is φ = 38641901528160.

The previous prime is 40400034023233. The next prime is 40400034023303. The reversal of 40400034023243 is 34232043000404.

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

It is a cyclic number.

It is not a de Polignac number, because 40400034023243 - 2¹⁰ = 40400034022219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40400034023233) 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, 9253326728 + ... + 9253331093.

It is an arithmetic number, because the mean of its divisors is an integer number (5274397479270).

Almost surely, 2^{40400034023243} is an apocalyptic number.

40400034023243 is a deficient number, since it is larger than the sum of its proper divisors (1795145810917).

40400034023243 is a wasteful number, since it uses less digits than its factorization.

40400034023243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18506657917.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 40400034023243 its reverse (34232043000404), we get a palindrome (74632077023647).

The spelling of 40400034023243 in words is "forty trillion, four hundred billion, thirty-four million, twenty-three thousand, two hundred forty-three".