109425727081 has 4 divisors (see below), whose sum is σ = 119373520464. Its totient is φ = 99477933700.

The previous prime is 109425727079. The next prime is 109425727091. The reversal of 109425727081 is 180727524901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109425727081 - 2¹ = 109425727079 is a prime.

It is a super-2 number, since 2×109425727081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109425727091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4973896675 + ... + 4973896696.

It is an arithmetic number, because the mean of its divisors is an integer number (29843380116).

Almost surely, 2^109425727081 is an apocalyptic number.

109425727081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109425727081 is a deficient number, since it is larger than the sum of its proper divisors (9947793383).

109425727081 is an equidigital number, since it uses as much as digits as its factorization.

109425727081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9947793382.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 109425727081 in words is "one hundred nine billion, four hundred twenty-five million, seven hundred twenty-seven thousand, eighty-one".