163799239489 has 8 divisors (see below), whose sum is σ = 164441914560. Its totient is φ = 163157133936.

The previous prime is 163799239481. The next prime is 163799239543. The reversal of 163799239489 is 984932997361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163799239489 - 2³ = 163799239481 is a prime.

It is a super-2 number, since 2×163799239489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163799239481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438604 + ... + 721090.

It is an arithmetic number, because the mean of its divisors is an integer number (20555239320).

Almost surely, 2^163799239489 is an apocalyptic number.

It is an amenable number.

163799239489 is a deficient number, since it is larger than the sum of its proper divisors (642675071).

163799239489 is a wasteful number, since it uses less digits than its factorization.

163799239489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284759.

The product of its digits is 158723712, while the sum is 70.

The spelling of 163799239489 in words is "one hundred sixty-three billion, seven hundred ninety-nine million, two hundred thirty-nine thousand, four hundred eighty-nine".