109143653529856 has 81 divisors (see below), whose sum is σ = 239471045029083. Its totient is φ = 49609915829760.

The previous prime is 109143653529851. The next prime is 109143653529887. The reversal of 109143653529856 is 658925356341901.

The square root of 109143653529856 is 10447184.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109143653529791 and 109143653529800.

It is not an unprimeable number, because it can be changed into a prime (109143653529851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1838674705 + ... + 1838734063.

Almost surely, 2^{109143653529856} is an apocalyptic number.

109143653529856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

109143653529856 is the 10447184-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109143653529856

109143653529856 is an abundant number, since it is smaller than the sum of its proper divisors (130327391499227).

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

109143653529856 is an frugal number, since it uses more digits than its factorization.

109143653529856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118756 (or 59372 counting only the distinct ones).

The product of its (nonzero) digits is 209952000, while the sum is 67.

The spelling of 109143653529856 in words is "one hundred nine trillion, one hundred forty-three billion, six hundred fifty-three million, five hundred twenty-nine thousand, eight hundred fifty-six".