40804897256 has 8 divisors (see below), whose sum is σ = 76509182370. Its totient is φ = 20402448624.

The previous prime is 40804897187. The next prime is 40804897291. The reversal of 40804897256 is 65279840804.

It can be written as a sum of positive squares in only one way, i.e., 37622809156 + 3182088100 = 193966^2 + 56410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 40804897198 and 40804897207.

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 as a sum of consecutive naturals, namely, 2550306071 + ... + 2550306086.

Almost surely, 2^40804897256 is an apocalyptic number.

It is an amenable number.

40804897256 is a deficient number, since it is larger than the sum of its proper divisors (35704285114).

40804897256 is a wasteful number, since it uses less digits than its factorization.

40804897256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100612163 (or 5100612159 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 40804897256 in words is "forty billion, eight hundred four million, eight hundred ninety-seven thousand, two hundred fifty-six".