40938641808 has 40 divisors (see below), whose sum is σ = 105766572768. Its totient is φ = 13645128192.

The previous prime is 40938641797. The next prime is 40938641813. The reversal of 40938641808 is 80814683904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773935 + ... + 825137.

Almost surely, 2^40938641808 is an apocalyptic number.

40938641808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40938641808 is an abundant number, since it is smaller than the sum of its proper divisors (64827930960).

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

40938641808 is a wasteful number, since it uses less digits than its factorization.

40938641808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67871 (or 67865 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 40938641808 in words is "forty billion, nine hundred thirty-eight million, six hundred forty-one thousand, eight hundred eight".