40236554440 has 16 divisors (see below), whose sum is σ = 90532247580. Its totient is φ = 16094621760.

The previous prime is 40236554437. The next prime is 40236554447. The reversal of 40236554440 is 4445563204.

It can be written as a sum of positive squares in 2 ways, for example, as 37069341156 + 3167213284 = 192534^2 + 56278^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40236554440.

It is not an unprimeable number, because it can be changed into a prime (40236554447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502956891 + ... + 502956970.

Almost surely, 2^40236554440 is an apocalyptic number.

40236554440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40236554440 is an abundant number, since it is smaller than the sum of its proper divisors (50295693140).

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

40236554440 is a wasteful number, since it uses less digits than its factorization.

40236554440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005913872 (or 1005913868 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 40236554440 in words is "forty billion, two hundred thirty-six million, five hundred fifty-four thousand, four hundred forty".