1003445729280 has 960 divisors, whose sum is σ = 3880796119200. Its totient is φ = 247159848960.

The previous prime is 1003445729249. The next prime is 1003445729287. The reversal of 1003445729280 is 829275443001.

1003445729280 is a `hidden beast` number, since 1 + 0 + 0 + 34 + 457 + 2 + 92 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×1003445729280² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003445729287) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 646132984 + ... + 646134536.

Almost surely, 2^{1003445729280} is an apocalyptic number.

1003445729280 is a gapful number since it is divisible by the number (10) 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 1003445729280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940398059600).

1003445729280 is an abundant number, since it is smaller than the sum of its proper divisors (2877350389920).

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

1003445729280 is a wasteful number, since it uses less digits than its factorization.

1003445729280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1003445729280 in words is "one trillion, three billion, four hundred forty-five million, seven hundred twenty-nine thousand, two hundred eighty".