40235021645540 has 48 divisors (see below), whose sum is σ = 85084843166064. Its totient is φ = 15981508608000.

The previous prime is 40235021645527. The next prime is 40235021645549. The reversal of 40235021645540 is 4554612053204.

40235021645540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 28186380544 + 40206835264996 = 167888^2 + 6340886^2 .

It is not an unprimeable number, because it can be changed into a prime (40235021645549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025360 + ... + 9028920.

It is an arithmetic number, because the mean of its divisors is an integer number (1772600899293).

Almost surely, 2^{40235021645540} is an apocalyptic number.

It is an amenable number.

40235021645540 is an abundant number, since it is smaller than the sum of its proper divisors (44849821520524).

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

40235021645540 is a wasteful number, since it uses less digits than its factorization.

40235021645540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8005328 (or 8005326 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 40235021645540 its reverse (4554612053204), we get a palindrome (44789633698744).

The spelling of 40235021645540 in words is "forty trillion, two hundred thirty-five billion, twenty-one million, six hundred forty-five thousand, five hundred forty".