40244665140 has 72 divisors (see below), whose sum is σ = 122092031880. Its totient is φ = 10730456064.

The previous prime is 40244665039. The next prime is 40244665147. The reversal of 40244665140 is 4156644204.

40244665140 is a `hidden beast` number, since 40 + 2 + 44 + 66 + 514 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3272297616 + 36972367524 = 57204^2 + 192282^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40244665095 and 40244665104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40244665147) by changing a digit.

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, 2276656 + ... + 2294264.

It is an arithmetic number, because the mean of its divisors is an integer number (1695722665).

Almost surely, 2^40244665140 is an apocalyptic number.

It is an amenable number.

40244665140 is an abundant number, since it is smaller than the sum of its proper divisors (81847366740).

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

40244665140 is a wasteful number, since it uses less digits than its factorization.

40244665140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30321 (or 30316 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 40244665140 in words is "forty billion, two hundred forty-four million, six hundred sixty-five thousand, one hundred forty".