40143238512 has 40 divisors (see below), whose sum is σ = 111680549904. Its totient is φ = 12351765504.

The previous prime is 40143238511. The next prime is 40143238523. The reversal of 40143238512 is 21583234104.

It is a super-2 number, since 2×40143238512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143238511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32165433 + ... + 32166680.

Almost surely, 2^40143238512 is an apocalyptic number.

It is an amenable number.

40143238512 is an abundant number, since it is smaller than the sum of its proper divisors (71537311392).

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

40143238512 is a wasteful number, since it uses less digits than its factorization.

40143238512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64332137 (or 64332131 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 40143238512 in words is "forty billion, one hundred forty-three million, two hundred thirty-eight thousand, five hundred twelve".