40002512065 has 32 divisors (see below), whose sum is σ = 54747518976. Its totient is φ = 27880596480.

The previous prime is 40002512063. The next prime is 40002512093. The reversal of 40002512065 is 56021520004.

It is not a de Polignac number, because 40002512065 - 2¹ = 40002512063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40002512063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269422 + ... + 390631.

It is an arithmetic number, because the mean of its divisors is an integer number (1710859968).

Almost surely, 2^40002512065 is an apocalyptic number.

It is an amenable number.

40002512065 is a deficient number, since it is larger than the sum of its proper divisors (14745006911).

40002512065 is a wasteful number, since it uses less digits than its factorization.

40002512065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660129.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 40002512065 in words is "forty billion, two million, five hundred twelve thousand, sixty-five".