109547566659081 has 24 divisors (see below), whose sum is σ = 164514338040000. Its totient is φ = 70159037632992.

The previous prime is 109547566659077. The next prime is 109547566659107. The reversal of 109547566659081 is 180956665745901.

It is not a de Polignac number, because 109547566659081 - 2² = 109547566659077 is a prime.

It is a super-2 number, since 2×109547566659081² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109547966659081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1054527151 + ... + 1054631028.

It is an arithmetic number, because the mean of its divisors is an integer number (6854764085000).

Almost surely, 2^{109547566659081} is an apocalyptic number.

It is an amenable number.

109547566659081 is a deficient number, since it is larger than the sum of its proper divisors (54966771380919).

109547566659081 is a wasteful number, since it uses less digits than its factorization.

109547566659081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109158413 (or 2109158410 counting only the distinct ones).

The product of its (nonzero) digits is 489888000, while the sum is 72.

The spelling of 109547566659081 in words is "one hundred nine trillion, five hundred forty-seven billion, five hundred sixty-six million, six hundred fifty-nine thousand, eighty-one".