1797549641720 has 256 divisors, whose sum is σ = 5063122944000. Its totient is φ = 560617376256.

The previous prime is 1797549641711. The next prime is 1797549641737. The reversal of 1797549641720 is 271469457971.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13430249 + ... + 13563431.

It is an arithmetic number, because the mean of its divisors is an integer number (19777824000).

Almost surely, 2^{1797549641720} is an apocalyptic number.

1797549641720 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 1797549641720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2531561472000).

1797549641720 is an abundant number, since it is smaller than the sum of its proper divisors (3265573302280).

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

1797549641720 is a wasteful number, since it uses less digits than its factorization.

1797549641720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133322 (or 133318 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 62.

The spelling of 1797549641720 in words is "one trillion, seven hundred ninety-seven billion, five hundred forty-nine million, six hundred forty-one thousand, seven hundred twenty".