88443855621 has 48 divisors (see below), whose sum is σ = 145501080192. Its totient is φ = 51245145600.

The previous prime is 88443855581. The next prime is 88443855623. The reversal of 88443855621 is 12655834488.

88443855621 is a `hidden beast` number, since 8 + 8 + 4 + 4 + 3 + 8 + 5 + 5 + 621 = 666.

It is not a de Polignac number, because 88443855621 - 2¹¹ = 88443853573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88443855623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4893361 + ... + 4911401.

It is an arithmetic number, because the mean of its divisors is an integer number (3031272504).

Almost surely, 2^88443855621 is an apocalyptic number.

It is an amenable number.

88443855621 is a deficient number, since it is larger than the sum of its proper divisors (57057224571).

88443855621 is a wasteful number, since it uses less digits than its factorization.

88443855621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20234 (or 20231 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 88443855621 in words is "eighty-eight billion, four hundred forty-three million, eight hundred fifty-five thousand, six hundred twenty-one".