123126163661 has 8 divisors (see below), whose sum is σ = 130533057024. Its totient is φ = 115933962960.

The previous prime is 123126163651. The next prime is 123126163663. The reversal of 123126163661 is 166361621321.

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

It is a cyclic number.

It is not a de Polignac number, because 123126163661 - 2⁶ = 123126163597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123126163663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53671985 + ... + 53674278.

It is an arithmetic number, because the mean of its divisors is an integer number (16316632128).

Almost surely, 2^123126163661 is an apocalyptic number.

It is an amenable number.

123126163661 is a deficient number, since it is larger than the sum of its proper divisors (7406893363).

123126163661 is a wasteful number, since it uses less digits than its factorization.

123126163661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107346331.

The product of its digits is 46656, while the sum is 38.

Adding to 123126163661 its reverse (166361621321), we get a palindrome (289487784982).

The spelling of 123126163661 in words is "one hundred twenty-three billion, one hundred twenty-six million, one hundred sixty-three thousand, six hundred sixty-one".