1445034563821 has 2 divisors, whose sum is σ = 1445034563822. Its totient is φ = 1445034563820.

The previous prime is 1445034563789. The next prime is 1445034563857. The reversal of 1445034563821 is 1283654305441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1435467572100 + 9566991721 = 1198110^2 + 97811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445034563821 - 2⁵ = 1445034563789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445034563521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722517281910 + 722517281911.

It is an arithmetic number, because the mean of its divisors is an integer number (722517281911).

Almost surely, 2^{1445034563821} is an apocalyptic number.

It is an amenable number.

1445034563821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445034563821 is an equidigital number, since it uses as much as digits as its factorization.

1445034563821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 1445034563821 in words is "one trillion, four hundred forty-five billion, thirty-four million, five hundred sixty-three thousand, eight hundred twenty-one".