40547665307 has 4 divisors (see below), whose sum is σ = 40557163296. Its totient is φ = 40538167320.

The previous prime is 40547665271. The next prime is 40547665309. The reversal of 40547665307 is 70356674504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40547665307 - 2¹⁸ = 40547403163 is a prime.

It is a super-2 number, since 2×40547665307² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40547665309) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4742588 + ... + 4751129.

It is an arithmetic number, because the mean of its divisors is an integer number (10139290824).

Almost surely, 2^40547665307 is an apocalyptic number.

40547665307 is a deficient number, since it is larger than the sum of its proper divisors (9497989).

40547665307 is an equidigital number, since it uses as much as digits as its factorization.

40547665307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9497988.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 40547665307 in words is "forty billion, five hundred forty-seven million, six hundred sixty-five thousand, three hundred seven".