88665652109 has 4 divisors (see below), whose sum is σ = 89342489280. Its totient is φ = 87988814940.

The previous prime is 88665652069. The next prime is 88665652123. The reversal of 88665652109 is 90125656688.

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 a de Polignac number, because none of the positive numbers 2^k-88665652109 is a prime.

It is a super-2 number, since 2×88665652109² (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 (88665652409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338418389 + ... + 338418650.

It is an arithmetic number, because the mean of its divisors is an integer number (22335622320).

Almost surely, 2^88665652109 is an apocalyptic number.

It is an amenable number.

88665652109 is a deficient number, since it is larger than the sum of its proper divisors (676837171).

88665652109 is a wasteful number, since it uses less digits than its factorization.

88665652109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676837170.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 88665652109 in words is "eighty-eight billion, six hundred sixty-five million, six hundred fifty-two thousand, one hundred nine".