102243658689 has 24 divisors (see below), whose sum is σ = 149877192192. Its totient is φ = 67157095680.

The previous prime is 102243658681. The next prime is 102243658703. The reversal of 102243658689 is 986856342201.

102243658689 is a `hidden beast` number, since 1 + 0 + 2 + 24 + 36 + 586 + 8 + 9 = 666.

It is not a de Polignac number, because 102243658689 - 2³ = 102243658681 is a prime.

It is a super-2 number, since 2×102243658689² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102243658681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67917 + ... + 457274.

It is an arithmetic number, because the mean of its divisors is an integer number (6244883008).

Almost surely, 2^102243658689 is an apocalyptic number.

It is an amenable number.

102243658689 is a deficient number, since it is larger than the sum of its proper divisors (47633533503).

102243658689 is a wasteful number, since it uses less digits than its factorization.

102243658689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525517 (or 525514 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 102243658689 in words is "one hundred two billion, two hundred forty-three million, six hundred fifty-eight thousand, six hundred eighty-nine".