109645789309712 has 20 divisors (see below), whose sum is σ = 224935111893276. Its totient is φ = 51598018498560.

The previous prime is 109645789309691. The next prime is 109645789309723. The reversal of 109645789309712 is 217903987546901.

It can be written as a sum of positive squares in 2 ways, for example, as 76166882388496 + 33478906921216 = 8727364^2 + 5786096^2 .

It is a super-2 number, since 2×109645789309712² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201554759489 + ... + 201554760032.

It is a 1-persistent number, because it is pandigital, but 2⋅109645789309712 = 219291578619424 is not.

Almost surely, 2^{109645789309712} is an apocalyptic number.

It is an amenable number.

109645789309712 is an abundant number, since it is smaller than the sum of its proper divisors (115289322583564).

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

109645789309712 is a wasteful number, since it uses less digits than its factorization.

109645789309712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403109519546 (or 403109519540 counting only the distinct ones).

The product of its (nonzero) digits is 205752960, while the sum is 71.

The spelling of 109645789309712 in words is "one hundred nine trillion, six hundred forty-five billion, seven hundred eighty-nine million, three hundred nine thousand, seven hundred twelve".