40042523444 has 36 divisors (see below), whose sum is σ = 88925608800. Its totient is φ = 15600982320.

The previous prime is 40042523407. The next prime is 40042523447. The reversal of 40042523444 is 44432524004.

It is a super-2 number, since 2×40042523444² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40042523444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042523447) 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 11 ways as a sum of consecutive naturals, for example, 9284144 + ... + 9288455.

It is an arithmetic number, because the mean of its divisors is an integer number (2470155800).

Almost surely, 2^40042523444 is an apocalyptic number.

40042523444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40042523444 is an abundant number, since it is smaller than the sum of its proper divisors (48883085356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40042523444 is a wasteful number, since it uses less digits than its factorization.

40042523444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18572628 (or 18572619 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 32.

The spelling of 40042523444 in words is "forty billion, forty-two million, five hundred twenty-three thousand, four hundred forty-four".