1729798775712 has 144 divisors (see below), whose sum is σ = 5622636539520. Its totient is φ = 494158726656.

The previous prime is 1729798775711. The next prime is 1729798775723. The reversal of 1729798775712 is 2175778979271.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1729798775712² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (1729798775711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15242893 + ... + 15355955.

It is an arithmetic number, because the mean of its divisors is an integer number (39046087080).

Almost surely, 2^{1729798775712} is an apocalyptic number.

1729798775712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1729798775712 is an abundant number, since it is smaller than the sum of its proper divisors (3892837763808).

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

1729798775712 is a wasteful number, since it uses less digits than its factorization.

1729798775712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120675 (or 120664 counting only the distinct ones).

The product of its digits is 217818720, while the sum is 72.

The spelling of 1729798775712 in words is "one trillion, seven hundred twenty-nine billion, seven hundred ninety-eight million, seven hundred seventy-five thousand, seven hundred twelve".