5640041953985 has 8 divisors (see below), whose sum is σ = 6830142550440. Its totient is φ = 4470638759424.

The previous prime is 5640041953979. The next prime is 5640041953999. The reversal of 5640041953985 is 5893591400465.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1337806836496 + 4302235117489 = 1156636^2 + 2074183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5640041953985 - 2¹² = 5640041949889 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 5174349872 + ... + 5174350961.

It is an arithmetic number, because the mean of its divisors is an integer number (853767818805).

Almost surely, 2^{5640041953985} is an apocalyptic number.

It is an amenable number.

5640041953985 is a deficient number, since it is larger than the sum of its proper divisors (1190100596455).

5640041953985 is a wasteful number, since it uses less digits than its factorization.

5640041953985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348700947.

The product of its (nonzero) digits is 23328000, while the sum is 59.

The spelling of 5640041953985 in words is "five trillion, six hundred forty billion, forty-one million, nine hundred fifty-three thousand, nine hundred eighty-five".