40344412553 has 4 divisors (see below), whose sum is σ = 41645845248. Its totient is φ = 39042979860.

The previous prime is 40344412547. The next prime is 40344412621. The reversal of 40344412553 is 35521444304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40344412553 - 2¹² = 40344408457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40344412513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650716301 + ... + 650716362.

It is an arithmetic number, because the mean of its divisors is an integer number (10411461312).

Almost surely, 2^40344412553 is an apocalyptic number.

It is an amenable number.

40344412553 is a deficient number, since it is larger than the sum of its proper divisors (1301432695).

40344412553 is a wasteful number, since it uses less digits than its factorization.

40344412553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301432694.

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

Adding to 40344412553 its reverse (35521444304), we get a palindrome (75865856857).

The spelling of 40344412553 in words is "forty billion, three hundred forty-four million, four hundred twelve thousand, five hundred fifty-three".