1445456511544 has 8 divisors (see below), whose sum is σ = 2710230959160. Its totient is φ = 722728255768.

The previous prime is 1445456511439. The next prime is 1445456511553. The reversal of 1445456511544 is 4451156545441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90341031964 + ... + 90341031979.

It is an arithmetic number, because the mean of its divisors is an integer number (338778869895).

Almost surely, 2^{1445456511544} is an apocalyptic number.

It is an amenable number.

1445456511544 is a deficient number, since it is larger than the sum of its proper divisors (1264774447616).

1445456511544 is a wasteful number, since it uses less digits than its factorization.

1445456511544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180682063949 (or 180682063945 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 49.

The spelling of 1445456511544 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, five hundred eleven thousand, five hundred forty-four".