40012045540 has 48 divisors (see below), whose sum is σ = 84534408000. Its totient is φ = 15908112000.

The previous prime is 40012045349. The next prime is 40012045547. The reversal of 40012045540 is 4554021004.

It is a happy number.

40012045540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40012045547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2496994 + ... + 2512966.

It is an arithmetic number, because the mean of its divisors is an integer number (1761133500).

Almost surely, 2^40012045540 is an apocalyptic number.

It is an amenable number.

40012045540 is an abundant number, since it is smaller than the sum of its proper divisors (44522362460).

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

40012045540 is a wasteful number, since it uses less digits than its factorization.

40012045540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16732 (or 16730 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 40012045540 its reverse (4554021004), we get a palindrome (44566066544).

The spelling of 40012045540 in words is "forty billion, twelve million, forty-five thousand, five hundred forty".