40728849168 has 80 divisors (see below), whose sum is σ = 120876834816. Its totient is φ = 11575870080.

The previous prime is 40728849163. The next prime is 40728849199. The reversal of 40728849168 is 86194882704.

It is not an unprimeable number, because it can be changed into a prime (40728849163) 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 15 ways as a sum of consecutive naturals, for example, 253146 + ... + 381497.

Almost surely, 2^40728849168 is an apocalyptic number.

40728849168 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40728849168 is an abundant number, since it is smaller than the sum of its proper divisors (80147985648).

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

40728849168 is a wasteful number, since it uses less digits than its factorization.

40728849168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634852 (or 634846 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 40728849168 in words is "forty billion, seven hundred twenty-eight million, eight hundred forty-nine thousand, one hundred sixty-eight".