40523455444 has 24 divisors (see below), whose sum is σ = 71961140160. Its totient is φ = 19963698624.

The previous prime is 40523455439. The next prime is 40523455501. The reversal of 40523455444 is 44455432504.

It is a super-2 number, since 2×40523455444² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40523455397 and 40523455406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216447 + ... + 357625.

It is an arithmetic number, because the mean of its divisors is an integer number (2998380840).

Almost surely, 2^40523455444 is an apocalyptic number.

It is an amenable number.

40523455444 is a deficient number, since it is larger than the sum of its proper divisors (31437684716).

40523455444 is a wasteful number, since it uses less digits than its factorization.

40523455444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142239 (or 142237 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 40.

Adding to 40523455444 its reverse (44455432504), we get a palindrome (84978887948).

The spelling of 40523455444 in words is "forty billion, five hundred twenty-three million, four hundred fifty-five thousand, four hundred forty-four".