88831658021 has 4 divisors (see below), whose sum is σ = 89322440844. Its totient is φ = 88340875200.

The previous prime is 88831657991. The next prime is 88831658039. The reversal of 88831658021 is 12085613888.

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 9270993796 + 79560664225 = 96286^2 + 282065^2 .

It is a cyclic number.

It is not a de Polignac number, because 88831658021 - 2¹⁰ = 88831656997 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 (88801658021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245391140 + ... + 245391501.

It is an arithmetic number, because the mean of its divisors is an integer number (22330610211).

Almost surely, 2^88831658021 is an apocalyptic number.

It is an amenable number.

88831658021 is a deficient number, since it is larger than the sum of its proper divisors (490782823).

88831658021 is a wasteful number, since it uses less digits than its factorization.

88831658021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490782822.

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 88831658021 in words is "eighty-eight billion, eight hundred thirty-one million, six hundred fifty-eight thousand, twenty-one".