1680357747287 has 8 divisors (see below), whose sum is σ = 1729468284336. Its totient is φ = 1631441708352.

The previous prime is 1680357747281. The next prime is 1680357747301. The reversal of 1680357747287 is 7827477530861.

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 1680357747287 - 2⁸ = 1680357747031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680357747281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48606998 + ... + 48641555.

It is an arithmetic number, because the mean of its divisors is an integer number (216183535542).

Almost surely, 2^{1680357747287} is an apocalyptic number.

1680357747287 is a deficient number, since it is larger than the sum of its proper divisors (49110537049).

1680357747287 is an equidigital number, since it uses as much as digits as its factorization.

1680357747287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97249057.

The product of its (nonzero) digits is 110638080, while the sum is 65.

The spelling of 1680357747287 in words is "one trillion, six hundred eighty billion, three hundred fifty-seven million, seven hundred forty-seven thousand, two hundred eighty-seven".