40691684257 has 8 divisors (see below), whose sum is σ = 47198883776. Its totient is φ = 34358010192.

The previous prime is 40691684237. The next prime is 40691684261. The reversal of 40691684257 is 75248619604.

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 40691684257 - 2¹¹ = 40691682209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40691684207) by changing a digit.

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, 43380858 + ... + 43381795.

It is an arithmetic number, because the mean of its divisors is an integer number (5899860472).

Almost surely, 2^40691684257 is an apocalyptic number.

It is an amenable number.

40691684257 is a deficient number, since it is larger than the sum of its proper divisors (6507199519).

40691684257 is an equidigital number, since it uses as much as digits as its factorization.

40691684257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86762727.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 40691684257 in words is "forty billion, six hundred ninety-one million, six hundred eighty-four thousand, two hundred fifty-seven".