163660713626 has 8 divisors (see below), whose sum is σ = 245498126304. Its totient is φ = 81828004860.

The previous prime is 163660713581. The next prime is 163660713679. The reversal of 163660713626 is 626317066361.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087670 + ... + 1228961.

It is an arithmetic number, because the mean of its divisors is an integer number (30687265788).

Almost surely, 2^163660713626 is an apocalyptic number.

163660713626 is a deficient number, since it is larger than the sum of its proper divisors (81837412678).

163660713626 is a wasteful number, since it uses less digits than its factorization.

163660713626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351956.

The product of its (nonzero) digits is 979776, while the sum is 47.

Adding to 163660713626 its reverse (626317066361), we get a palindrome (789977779987).

The spelling of 163660713626 in words is "one hundred sixty-three billion, six hundred sixty million, seven hundred thirteen thousand, six hundred twenty-six".