1728778701120 has 224 divisors, whose sum is σ = 5620121075712. Its totient is φ = 449997907968.

The previous prime is 1728778701101. The next prime is 1728778701121. The reversal of 1728778701120 is 211078778271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728778701121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68636049 + ... + 68661231.

Almost surely, 2^{1728778701120} is an apocalyptic number.

1728778701120 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 1728778701120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2810060537856).

1728778701120 is an abundant number, since it is smaller than the sum of its proper divisors (3891342374592).

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

1728778701120 is a wasteful number, since it uses less digits than its factorization.

1728778701120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26909 (or 26899 counting only the distinct ones).

The product of its (nonzero) digits is 614656, while the sum is 51.

The spelling of 1728778701120 in words is "one trillion, seven hundred twenty-eight billion, seven hundred seventy-eight million, seven hundred one thousand, one hundred twenty".