40660261568 has 14 divisors (see below), whose sum is σ = 80685206676. Its totient is φ = 20330130752.

The previous prime is 40660261553. The next prime is 40660261589. The reversal of 40660261568 is 86516206604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317658230 + ... + 317658357.

Almost surely, 2^40660261568 is an apocalyptic number.

It is an amenable number.

40660261568 is a deficient number, since it is larger than the sum of its proper divisors (40024945108).

40660261568 is an equidigital number, since it uses as much as digits as its factorization.

40660261568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635316599 (or 635316589 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 40660261568 in words is "forty billion, six hundred sixty million, two hundred sixty-one thousand, five hundred sixty-eight".