40012320532 has 12 divisors (see below), whose sum is σ = 71342722836. Its totient is φ = 19628685440.

The previous prime is 40012320529. The next prime is 40012320559. The reversal of 40012320532 is 23502321004.

It can be written as a sum of positive squares in 2 ways, for example, as 20804023696 + 19208296836 = 144236^2 + 138594^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94368469 + ... + 94368892.

It is an arithmetic number, because the mean of its divisors is an integer number (5945226903).

Almost surely, 2^40012320532 is an apocalyptic number.

It is an amenable number.

40012320532 is a deficient number, since it is larger than the sum of its proper divisors (31330402304).

40012320532 is a wasteful number, since it uses less digits than its factorization.

40012320532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188737418 (or 188737416 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 40012320532 its reverse (23502321004), we get a palindrome (63514641536).

The spelling of 40012320532 in words is "forty billion, twelve million, three hundred twenty thousand, five hundred thirty-two".