163700340639 has 16 divisors (see below), whose sum is σ = 238731300864. Its totient is φ = 98953280000.

The previous prime is 163700340631. The next prime is 163700340659. The reversal of 163700340639 is 936043007361.

It is a cyclic number.

It is not a de Polignac number, because 163700340639 - 2³ = 163700340631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163700340639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163700340631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6463362 + ... + 6488639.

It is an arithmetic number, because the mean of its divisors is an integer number (14920706304).

Almost surely, 2^163700340639 is an apocalyptic number.

163700340639 is a deficient number, since it is larger than the sum of its proper divisors (75030960225).

163700340639 is a wasteful number, since it uses less digits than its factorization.

163700340639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952398.

The product of its (nonzero) digits is 244944, while the sum is 42.

The spelling of 163700340639 in words is "one hundred sixty-three billion, seven hundred million, three hundred forty thousand, six hundred thirty-nine".