1445722387392 has 224 divisors, whose sum is σ = 4448680358400. Its totient is φ = 411005878272.

The previous prime is 1445722387387. The next prime is 1445722387433. The reversal of 1445722387392 is 2937832275441.

It is a happy number.

It is a super-2 number, since 2×1445722387392² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

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, 919584 + ... + 1933152.

Almost surely, 2^{1445722387392} is an apocalyptic number.

1445722387392 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 1445722387392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2224340179200).

1445722387392 is an abundant number, since it is smaller than the sum of its proper divisors (3002957971008).

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

1445722387392 is a wasteful number, since it uses less digits than its factorization.

1445722387392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013643 (or 1013633 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 57.

The spelling of 1445722387392 in words is "one trillion, four hundred forty-five billion, seven hundred twenty-two million, three hundred eighty-seven thousand, three hundred ninety-two".