109587577981 has 8 divisors (see below), whose sum is σ = 125261801984. Its totient is φ = 93918067920.

The previous prime is 109587577973. The next prime is 109587578011. The reversal of 109587577981 is 189775785901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109587577981 - 2³ = 109587577973 is a prime.

It is a super-2 number, since 2×109587577981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109587577961) 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 7 ways as a sum of consecutive naturals, for example, 1128525 + ... + 1221778.

It is an arithmetic number, because the mean of its divisors is an integer number (15657725248).

Almost surely, 2^109587577981 is an apocalyptic number.

It is an amenable number.

109587577981 is a deficient number, since it is larger than the sum of its proper divisors (15674224003).

109587577981 is an equidigital number, since it uses as much as digits as its factorization.

109587577981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356971.

The product of its (nonzero) digits is 44452800, while the sum is 67.

The spelling of 109587577981 in words is "one hundred nine billion, five hundred eighty-seven million, five hundred seventy-seven thousand, nine hundred eighty-one".