40344423551 has 16 divisors (see below), whose sum is σ = 42468451200. Its totient is φ = 38270047200.

The previous prime is 40344423523. The next prime is 40344423583. The reversal of 40344423551 is 15532444304.

It is not a de Polignac number, because 40344423551 - 2¹⁰ = 40344422527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40344423521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3297836 + ... + 3310046.

It is an arithmetic number, because the mean of its divisors is an integer number (2654278200).

Almost surely, 2^40344423551 is an apocalyptic number.

40344423551 is a deficient number, since it is larger than the sum of its proper divisors (2124027649).

40344423551 is a wasteful number, since it uses less digits than its factorization.

40344423551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14230.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 40344423551 its reverse (15532444304), we get a palindrome (55876867855).

The spelling of 40344423551 in words is "forty billion, three hundred forty-four million, four hundred twenty-three thousand, five hundred fifty-one".