40206440540 has 48 divisors (see below), whose sum is σ = 96610752000. Its totient is φ = 13768594752.

The previous prime is 40206440503. The next prime is 40206440557. The reversal of 40206440540 is 4504460204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53690 + ... + 288609.

It is an arithmetic number, because the mean of its divisors is an integer number (2012724000).

Almost surely, 2^40206440540 is an apocalyptic number.

It is an amenable number.

40206440540 is an abundant number, since it is smaller than the sum of its proper divisors (56404311460).

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

40206440540 is a wasteful number, since it uses less digits than its factorization.

40206440540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343154 (or 343152 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The spelling of 40206440540 in words is "forty billion, two hundred six million, four hundred forty thousand, five hundred forty".