1663003895040 has 216 divisors, whose sum is σ = 5754780944640. Its totient is φ = 443393667072.

The previous prime is 1663003895009. The next prime is 1663003895087. The reversal of 1663003895040 is 405983003661.

1663003895040 is a `hidden beast` number, since 1 + 6 + 63 + 0 + 0 + 3 + 89 + 504 + 0 = 666.

It is a super-2 number, since 2×1663003895040² (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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128084389 + ... + 128097371.

Almost surely, 2^{1663003895040} is an apocalyptic number.

1663003895040 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 1663003895040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2877390472320).

1663003895040 is an abundant number, since it is smaller than the sum of its proper divisors (4091777049600).

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

1663003895040 is a wasteful number, since it uses less digits than its factorization.

1663003895040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24129 (or 24112 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 1663003895040 in words is "one trillion, six hundred sixty-three billion, three million, eight hundred ninety-five thousand, forty".