40144040125540 has 24 divisors (see below), whose sum is σ = 90787290746040. Its totient is φ = 14822414815488.

The previous prime is 40144040125487. The next prime is 40144040125549. The reversal of 40144040125540 is 4552104044104.

It can be written as a sum of positive squares in 4 ways, for example, as 851677962496 + 39292362163044 = 922864^2 + 6268362^2 .

It is a super-2 number, since 2×40144040125540² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144040125496 and 40144040125505.

It is not an unprimeable number, because it can be changed into a prime (40144040125549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77200076905 + ... + 77200077424.

It is an arithmetic number, because the mean of its divisors is an integer number (3782803781085).

Almost surely, 2^{40144040125540} is an apocalyptic number.

It is an amenable number.

40144040125540 is an abundant number, since it is smaller than the sum of its proper divisors (50643250620500).

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

40144040125540 is a wasteful number, since it uses less digits than its factorization.

40144040125540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154400154351 (or 154400154349 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 40144040125540 its reverse (4552104044104), we get a palindrome (44696144169644).

The spelling of 40144040125540 in words is "forty trillion, one hundred forty-four billion, forty million, one hundred twenty-five thousand, five hundred forty".