40013122432 has 16 divisors (see below), whose sum is σ = 79713642600. Its totient is φ = 20006561152.

The previous prime is 40013122399. The next prime is 40013122439. The reversal of 40013122432 is 23422131004.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013122439) 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 as a sum of consecutive naturals, namely, 156301132 + ... + 156301387.

Almost surely, 2^40013122432 is an apocalyptic number.

It is an amenable number.

40013122432 is a deficient number, since it is larger than the sum of its proper divisors (39700520168).

40013122432 is an equidigital number, since it uses as much as digits as its factorization.

40013122432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312602533 (or 312602521 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40013122432 its reverse (23422131004), we get a palindrome (63435253436).

The spelling of 40013122432 in words is "forty billion, thirteen million, one hundred twenty-two thousand, four hundred thirty-two".