40684330809247 has 2 divisors, whose sum is σ = 40684330809248. Its totient is φ = 40684330809246.

The previous prime is 40684330809193. The next prime is 40684330809319. The reversal of 40684330809247 is 74290803348604.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40684330809247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40684330809191 and 40684330809200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40684330809047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20342165404623 + 20342165404624.

It is an arithmetic number, because the mean of its divisors is an integer number (20342165404624).

Almost surely, 2^{40684330809247} is an apocalyptic number.

40684330809247 is a deficient number, since it is larger than the sum of its proper divisors (1).

40684330809247 is an equidigital number, since it uses as much as digits as its factorization.

40684330809247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27869184, while the sum is 58.

The spelling of 40684330809247 in words is "forty trillion, six hundred eighty-four billion, three hundred thirty million, eight hundred nine thousand, two hundred forty-seven".