163927920317 has 16 divisors (see below), whose sum is σ = 188574946560. Its totient is φ = 139588420608.

The previous prime is 163927920313. The next prime is 163927920329. The reversal of 163927920317 is 713029729361.

It is not a de Polignac number, because 163927920317 - 2² = 163927920313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163927920311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7822109 + ... + 7843037.

It is an arithmetic number, because the mean of its divisors is an integer number (11785934160).

Almost surely, 2^163927920317 is an apocalyptic number.

It is an amenable number.

163927920317 is a deficient number, since it is larger than the sum of its proper divisors (24647026243).

163927920317 is a wasteful number, since it uses less digits than its factorization.

163927920317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28220.

The product of its (nonzero) digits is 857304, while the sum is 50.

The spelling of 163927920317 in words is "one hundred sixty-three billion, nine hundred twenty-seven million, nine hundred twenty thousand, three hundred seventeen".