109545552981 has 8 divisors (see below), whose sum is σ = 162289708160. Its totient is φ = 73030368636.

The previous prime is 109545552971. The next prime is 109545552989. The reversal of 109545552981 is 189255545901.

109545552981 is a `hidden beast` number, since 1 + 0 + 9 + 5 + 4 + 5 + 552 + 9 + 81 = 666.

It is not a de Polignac number, because 109545552981 - 2¹⁵ = 109545520213 is a prime.

It is a super-2 number, since 2×109545552981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109545552989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028621325 + ... + 2028621378.

It is an arithmetic number, because the mean of its divisors is an integer number (20286213520).

Almost surely, 2^109545552981 is an apocalyptic number.

It is an amenable number.

109545552981 is a deficient number, since it is larger than the sum of its proper divisors (52744155179).

109545552981 is an equidigital number, since it uses as much as digits as its factorization.

109545552981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057242712 (or 4057242706 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 54.

The spelling of 109545552981 in words is "one hundred nine billion, five hundred forty-five million, five hundred fifty-two thousand, nine hundred eighty-one".