88661704885 has 16 divisors (see below), whose sum is σ = 121318099056. Its totient is φ = 61621890048.

The previous prime is 88661704877. The next prime is 88661704927. The reversal of 88661704885 is 58840716688.

It can be written as a sum of positive squares in 8 ways, for example, as 3307745169 + 85353959716 = 57513^2 + 292154^2 .

It is a cyclic number.

It is not a de Polignac number, because 88661704885 - 2³ = 88661704877 is a prime.

It is a super-2 number, since 2×88661704885² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40117314 + ... + 40119523.

It is an arithmetic number, because the mean of its divisors is an integer number (7582381191).

Almost surely, 2^88661704885 is an apocalyptic number.

88661704885 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

88661704885 is a deficient number, since it is larger than the sum of its proper divisors (32656394171).

88661704885 is a wasteful number, since it uses less digits than its factorization.

88661704885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80236872.

The product of its (nonzero) digits is 20643840, while the sum is 61.

The spelling of 88661704885 in words is "eighty-eight billion, six hundred sixty-one million, seven hundred four thousand, eight hundred eighty-five".