4444040135540 has 24 divisors (see below), whose sum is σ = 9881453949192. Its totient is φ = 1673050403840.

The previous prime is 4444040135531. The next prime is 4444040135573. The reversal of 4444040135540 is 455310404444.

It can be written as a sum of positive squares in 4 ways, for example, as 2033715575056 + 2410324560484 = 1426084^2 + 1552522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4444040135494 and 4444040135503.

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, 6535352801 + ... + 6535353480.

It is an arithmetic number, because the mean of its divisors is an integer number (411727247883).

Almost surely, 2^{4444040135540} is an apocalyptic number.

It is an amenable number.

4444040135540 is an abundant number, since it is smaller than the sum of its proper divisors (5437413813652).

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

4444040135540 is a wasteful number, since it uses less digits than its factorization.

4444040135540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13070706307 (or 13070706305 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 4444040135540 its reverse (455310404444), we get a palindrome (4899350539984).

The spelling of 4444040135540 in words is "four trillion, four hundred forty-four billion, forty million, one hundred thirty-five thousand, five hundred forty".