40043144555 has 16 divisors (see below), whose sum is σ = 50229184320. Its totient is φ = 30587808768.

The previous prime is 40043144549. The next prime is 40043144563. The reversal of 40043144555 is 55544134004.

40043144555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40043144555 - 2⁴ = 40043144539 is a prime.

It is a super-2 number, since 2×40043144555² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240542 + ... + 371411.

It is an arithmetic number, because the mean of its divisors is an integer number (3139324020).

Almost surely, 2^40043144555 is an apocalyptic number.

40043144555 is a deficient number, since it is larger than the sum of its proper divisors (10186039765).

40043144555 is a wasteful number, since it uses less digits than its factorization.

40043144555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612550.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 40043144555 its reverse (55544134004), we get a palindrome (95587278559).

The spelling of 40043144555 in words is "forty billion, forty-three million, one hundred forty-four thousand, five hundred fifty-five".