1445001643752 has 128 divisors (see below), whose sum is σ = 3900471840000. Its totient is φ = 444733470720.

The previous prime is 1445001643739. The next prime is 1445001643783. The reversal of 1445001643752 is 2573461005441.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 94135374 + ... + 94150722.

It is an arithmetic number, because the mean of its divisors is an integer number (30472436250).

Almost surely, 2^{1445001643752} is an apocalyptic number.

1445001643752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445001643752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1950235920000).

1445001643752 is an abundant number, since it is smaller than the sum of its proper divisors (2455470196248).

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

1445001643752 is a wasteful number, since it uses less digits than its factorization.

1445001643752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21291 (or 21287 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 1445001643752 in words is "one trillion, four hundred forty-five billion, one million, six hundred forty-three thousand, seven hundred fifty-two".