1491073273200 has 480 divisors, whose sum is σ = 5579421465600. Its totient is φ = 340249728000.

The previous prime is 1491073273159. The next prime is 1491073273201. The reversal of 1491073273200 is 23723701941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491073273201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 278650525 + ... + 278655875.

It is an arithmetic number, because the mean of its divisors is an integer number (11623794720).

Almost surely, 2^{1491073273200} is an apocalyptic number.

1491073273200 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 1491073273200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2789710732800).

1491073273200 is an abundant number, since it is smaller than the sum of its proper divisors (4088348192400).

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

1491073273200 is a wasteful number, since it uses less digits than its factorization.

1491073273200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070 (or 6045 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 1491073273200 in words is "one trillion, four hundred ninety-one billion, seventy-three million, two hundred seventy-three thousand, two hundred".