1685612113963 has 2 divisors, whose sum is σ = 1685612113964. Its totient is φ = 1685612113962.

The previous prime is 1685612113849. The next prime is 1685612113981. The reversal of 1685612113963 is 3693112165861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1685612113963 - 2²⁵ = 1685578559531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1685612113963.

It is not a weakly prime, because it can be changed into another prime (1685612113993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842806056981 + 842806056982.

It is an arithmetic number, because the mean of its divisors is an integer number (842806056982).

Almost surely, 2^{1685612113963} is an apocalyptic number.

1685612113963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685612113963 is an equidigital number, since it uses as much as digits as its factorization.

1685612113963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 52.

The spelling of 1685612113963 in words is "one trillion, six hundred eighty-five billion, six hundred twelve million, one hundred thirteen thousand, nine hundred sixty-three".