88671840720109 has 4 divisors (see below), whose sum is σ = 88686918406780. Its totient is φ = 88656763033440.

The previous prime is 88671840720079. The next prime is 88671840720119. The reversal of 88671840720109 is 90102704817688.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72213930502884 + 16457910217225 = 8497878^2 + 4056835^2 .

It is a cyclic number.

It is not a de Polignac number, because 88671840720109 - 2¹¹ = 88671840718061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88671840720119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7538834514 + ... + 7538846275.

It is an arithmetic number, because the mean of its divisors is an integer number (22171729601695).

Almost surely, 2^{88671840720109} is an apocalyptic number.

It is an amenable number.

88671840720109 is a deficient number, since it is larger than the sum of its proper divisors (15077686671).

88671840720109 is a wasteful number, since it uses less digits than its factorization.

88671840720109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15077686670.

The product of its (nonzero) digits is 10838016, while the sum is 61.

The spelling of 88671840720109 in words is "eighty-eight trillion, six hundred seventy-one billion, eight hundred forty million, seven hundred twenty thousand, one hundred nine".