40044420155542 has 48 divisors (see below), whose sum is σ = 69159501000000. Its totient is φ = 17243522365680.

The previous prime is 40044420155507. The next prime is 40044420155557. The reversal of 40044420155542 is 24555102444004.

It is a super-3 number, since 3×40044420155542³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40044420155495 and 40044420155504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536039709 + ... + 536114407.

It is an arithmetic number, because the mean of its divisors is an integer number (1440822937500).

Almost surely, 2^{40044420155542} is an apocalyptic number.

40044420155542 is a deficient number, since it is larger than the sum of its proper divisors (29115080844458).

40044420155542 is a wasteful number, since it uses less digits than its factorization.

40044420155542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142249 (or 142230 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 40.

Adding to 40044420155542 its reverse (24555102444004), we get a palindrome (64599522599546).

The spelling of 40044420155542 in words is "forty trillion, forty-four billion, four hundred twenty million, one hundred fifty-five thousand, five hundred forty-two".