240040006540 has 24 divisors (see below), whose sum is σ = 504109215792. Its totient is φ = 96011202240.

The previous prime is 240040006513. The next prime is 240040006631. The reversal of 240040006540 is 45600040042.

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, 124675 + ... + 704005.

It is an arithmetic number, because the mean of its divisors is an integer number (21004550658).

Almost surely, 2^240040006540 is an apocalyptic number.

240040006540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240040006540 is an abundant number, since it is smaller than the sum of its proper divisors (264069209252).

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

240040006540 is a wasteful number, since it uses less digits than its factorization.

240040006540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600057 (or 600055 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 240040006540 its reverse (45600040042), we get a palindrome (285640046582).

The spelling of 240040006540 in words is "two hundred forty billion, forty million, six thousand, five hundred forty".