1603781897472 has 576 divisors, whose sum is σ = 5119150579200. Its totient is φ = 499638730752.

The previous prime is 1603781897461. The next prime is 1603781897477. The reversal of 1603781897472 is 2747981873061.

1603781897472 is a `hidden beast` number, since 1 + 6 + 0 + 3 + 7 + 81 + 89 + 7 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603781897477) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1589476104 + ... + 1589477112.

It is an arithmetic number, because the mean of its divisors is an integer number (8887414200).

Almost surely, 2^{1603781897472} is an apocalyptic number.

1603781897472 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 1603781897472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2559575289600).

1603781897472 is an abundant number, since it is smaller than the sum of its proper divisors (3515368681728).

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

1603781897472 is an equidigital number, since it uses as much as digits as its factorization.

1603781897472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 1603781897472 in words is "one trillion, six hundred three billion, seven hundred eighty-one million, eight hundred ninety-seven thousand, four hundred seventy-two".