163876713481 has 4 divisors (see below), whose sum is σ = 176482614532. Its totient is φ = 151270812432.

The previous prime is 163876713463. The next prime is 163876713491. The reversal of 163876713481 is 184317678361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108659233225 + 55217480256 = 329635^2 + 234984^2 .

It is a cyclic number.

It is not a de Polignac number, because 163876713481 - 2⁹ = 163876712969 is a prime.

It is a super-2 number, since 2×163876713481² (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 (163876713421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6302950506 + ... + 6302950531.

It is an arithmetic number, because the mean of its divisors is an integer number (44120653633).

Almost surely, 2^163876713481 is an apocalyptic number.

It is an amenable number.

163876713481 is a deficient number, since it is larger than the sum of its proper divisors (12605901051).

163876713481 is a wasteful number, since it uses less digits than its factorization.

163876713481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12605901050.

The product of its digits is 4064256, while the sum is 55.

The spelling of 163876713481 in words is "one hundred sixty-three billion, eight hundred seventy-six million, seven hundred thirteen thousand, four hundred eighty-one".