40641865396 has 48 divisors (see below), whose sum is σ = 80271475200. Its totient is φ = 17837568000.

The previous prime is 40641865387. The next prime is 40641865403. The reversal of 40641865396 is 69356814604.

It is a happy number.

It is a super-2 number, since 2×40641865396² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579256 + ... + 645616.

It is an arithmetic number, because the mean of its divisors is an integer number (1672322400).

Almost surely, 2^40641865396 is an apocalyptic number.

It is an amenable number.

40641865396 is a deficient number, since it is larger than the sum of its proper divisors (39629609804).

40641865396 is a wasteful number, since it uses less digits than its factorization.

40641865396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66856 (or 66854 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 40641865396 in words is "forty billion, six hundred forty-one million, eight hundred sixty-five thousand, three hundred ninety-six".