3685780673287 has 2 divisors, whose sum is σ = 3685780673288. Its totient is φ = 3685780673286.

The previous prime is 3685780673173. The next prime is 3685780673293. The reversal of 3685780673287 is 7823760875863.

3685780673287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685780673287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3685780673087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842890336643 + 1842890336644.

It is an arithmetic number, because the mean of its divisors is an integer number (1842890336644).

Almost surely, 2^{3685780673287} is an apocalyptic number.

3685780673287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3685780673287 is an equidigital number, since it uses as much as digits as its factorization.

3685780673287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 568995840, while the sum is 70.

The spelling of 3685780673287 in words is "three trillion, six hundred eighty-five billion, seven hundred eighty million, six hundred seventy-three thousand, two hundred eighty-seven".