163177779112 has 16 divisors (see below), whose sum is σ = 313420734900. Its totient is φ = 79598916480.

The previous prime is 163177779077. The next prime is 163177779151. The reversal of 163177779112 is 211977771361.

It can be written as a sum of positive squares in 2 ways, for example, as 159691348996 + 3486430116 = 399614^2 + 59046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163177779112.

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, 248746287 + ... + 248746942.

Almost surely, 2^163177779112 is an apocalyptic number.

It is an amenable number.

163177779112 is a deficient number, since it is larger than the sum of its proper divisors (150242955788).

163177779112 is a wasteful number, since it uses less digits than its factorization.

163177779112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497493276 (or 497493272 counting only the distinct ones).

The product of its digits is 777924, while the sum is 52.

The spelling of 163177779112 in words is "one hundred sixty-three billion, one hundred seventy-seven million, seven hundred seventy-nine thousand, one hundred twelve".