40305385538 has 32 divisors (see below), whose sum is σ = 66389621760. Its totient is φ = 18199834960.

The previous prime is 40305385529. The next prime is 40305385579. The reversal of 40305385538 is 83558350304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10663733 + ... + 10667511.

It is an arithmetic number, because the mean of its divisors is an integer number (2074675680).

Almost surely, 2^40305385538 is an apocalyptic number.

40305385538 is a deficient number, since it is larger than the sum of its proper divisors (26084236222).

40305385538 is a wasteful number, since it uses less digits than its factorization.

40305385538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 40305385538 in words is "forty billion, three hundred five million, three hundred eighty-five thousand, five hundred thirty-eight".