40638724232 has 36 divisors (see below), whose sum is σ = 76771720935. Its totient is φ = 20167408080.

The previous prime is 40638724207. The next prime is 40638724267. The reversal of 40638724232 is 23242783604.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 20319362116 + 20319362116 = 142546^2 + 142546^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=142546.

It is a super-3 number, since 3×40638724232³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40638724232.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 149958257 + ... + 149958527.

Almost surely, 2^40638724232 is an apocalyptic number.

It is an amenable number.

40638724232 is a deficient number, since it is larger than the sum of its proper divisors (36132996703).

40638724232 is an frugal number, since it uses more digits than its factorization.

40638724232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 40638724232 in words is "forty billion, six hundred thirty-eight million, seven hundred twenty-four thousand, two hundred thirty-two".