1445456511616 has 64 divisors (see below), whose sum is σ = 3173249106720. Its totient is φ = 651619003392.

The previous prime is 1445456511593. The next prime is 1445456511619. The reversal of 1445456511616 is 6161156545441.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1445456511616.

It is not an unprimeable number, because it can be changed into a prime (1445456511619) 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, 10029190 + ... + 10172293.

Almost surely, 2^{1445456511616} is an apocalyptic number.

1445456511616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1445456511616 is an abundant number, since it is smaller than the sum of its proper divisors (1727792595104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445456511616 is a wasteful number, since it uses less digits than its factorization.

1445456511616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20201553 (or 20201541 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

The spelling of 1445456511616 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, five hundred eleven thousand, six hundred sixteen".