88663683667581 has 36 divisors (see below), whose sum is σ = 144204335680860. Its totient is φ = 52424942275200.

The previous prime is 88663683667501. The next prime is 88663683667619. The reversal of 88663683667581 is 18576638636688.

88663683667581 is a `hidden beast` number, since 8 + 86 + 6 + 36 + 8 + 366 + 75 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1966821124356 + 86696862543225 = 1402434^2 + 9311115^2 .

It is not a de Polignac number, because 88663683667581 - 2¹³ = 88663683659389 is a prime.

It is a super-2 number, since 2×88663683667581² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 88663683667581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88663683667501) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 992851986 + ... + 992941283.

It is an arithmetic number, because the mean of its divisors is an integer number (4005675991135).

Almost surely, 2^{88663683667581} is an apocalyptic number.

It is an amenable number.

88663683667581 is a deficient number, since it is larger than the sum of its proper divisors (55540652013279).

88663683667581 is a wasteful number, since it uses less digits than its factorization.

88663683667581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985793338 (or 1985793324 counting only the distinct ones).

The product of its digits is 10032906240, while the sum is 81.

The spelling of 88663683667581 in words is "eighty-eight trillion, six hundred sixty-three billion, six hundred eighty-three million, six hundred sixty-seven thousand, five hundred eighty-one".