40384072856065 has 16 divisors (see below), whose sum is σ = 50030976231936. Its totient is φ = 31260817180800.

The previous prime is 40384072856027. The next prime is 40384072856069. The reversal of 40384072856065 is 56065827048304.

It is not a de Polignac number, because 40384072856065 - 2¹⁹ = 40384072331777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40384072856069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16659427 + ... + 18928936.

It is an arithmetic number, because the mean of its divisors is an integer number (3126936014496).

Almost surely, 2^{40384072856065} is an apocalyptic number.

It is an amenable number.

40384072856065 is a deficient number, since it is larger than the sum of its proper divisors (9646903375871).

40384072856065 is a wasteful number, since it uses less digits than its factorization.

40384072856065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35595720.

The product of its (nonzero) digits is 38707200, while the sum is 58.

The spelling of 40384072856065 in words is "forty trillion, three hundred eighty-four billion, seventy-two million, eight hundred fifty-six thousand, sixty-five".