40044100623 has 4 divisors (see below), whose sum is σ = 53392134168. Its totient is φ = 26696067080.

The previous prime is 40044100609. The next prime is 40044100651. The reversal of 40044100623 is 32600144004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40044100623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40044100593 and 40044100602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044170623) 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, 6674016768 + ... + 6674016773.

It is an arithmetic number, because the mean of its divisors is an integer number (13348033542).

Almost surely, 2^40044100623 is an apocalyptic number.

40044100623 is a deficient number, since it is larger than the sum of its proper divisors (13348033545).

40044100623 is a wasteful number, since it uses less digits than its factorization.

40044100623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348033544.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40044100623 its reverse (32600144004), we get a palindrome (72644244627).

The spelling of 40044100623 in words is "forty billion, forty-four million, one hundred thousand, six hundred twenty-three".