5491780203000 has 1024 divisors, whose sum is σ = 21598327296000. Its totient is φ = 1154429337600.

The previous prime is 5491780202983. The next prime is 5491780203017. The reversal of 5491780203000 is 3020871945.

It is an interprime number because it is at equal distance from previous prime (5491780202983) and next prime (5491780203017).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 5491780203000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 4722080419 + ... + 4722081581.

It is an arithmetic number, because the mean of its divisors is an integer number (21092116500).

Almost surely, 2^{5491780203000} is an apocalyptic number.

5491780203000 is a gapful number since it is divisible by the number (50) 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 5491780203000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10799163648000).

5491780203000 is an abundant number, since it is smaller than the sum of its proper divisors (16106547093000).

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

5491780203000 is a wasteful number, since it uses less digits than its factorization.

5491780203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574 (or 1546 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 5491780203000 in words is "five trillion, four hundred ninety-one billion, seven hundred eighty million, two hundred three thousand".