40128381424 has 10 divisors (see below), whose sum is σ = 77748739040. Its totient is φ = 20064190704.

The previous prime is 40128381421. The next prime is 40128381437. The reversal of 40128381424 is 42418382104.

40128381424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40128381424² (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 (40128381421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254011904 + ... + 1254011935.

It is an arithmetic number, because the mean of its divisors is an integer number (7774873904).

Almost surely, 2^40128381424 is an apocalyptic number.

It is an amenable number.

40128381424 is a deficient number, since it is larger than the sum of its proper divisors (37620357616).

40128381424 is a wasteful number, since it uses less digits than its factorization.

40128381424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508023847 (or 2508023841 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The spelling of 40128381424 in words is "forty billion, one hundred twenty-eight million, three hundred eighty-one thousand, four hundred twenty-four".