1445886668851 has 2 divisors, whose sum is σ = 1445886668852. Its totient is φ = 1445886668850.

The previous prime is 1445886668833. The next prime is 1445886668887. The reversal of 1445886668851 is 1588666885441.

It is a weak prime.

It is an emirp because it is prime and its reverse (1588666885441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445886668851 is a prime.

It is a super-2 number, since 2×1445886668851² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1445886668801) 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 as a sum of consecutive naturals, namely, 722943334425 + 722943334426.

It is an arithmetic number, because the mean of its divisors is an integer number (722943334426).

Almost surely, 2^{1445886668851} is an apocalyptic number.

1445886668851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445886668851 is an equidigital number, since it uses as much as digits as its factorization.

1445886668851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 353894400, while the sum is 70.

The spelling of 1445886668851 in words is "one trillion, four hundred forty-five billion, eight hundred eighty-six million, six hundred sixty-eight thousand, eight hundred fifty-one".