123448350681 has 12 divisors (see below), whose sum is σ = 180756946708. Its totient is φ = 81171517824.

The previous prime is 123448350677. The next prime is 123448350721. The reversal of 123448350681 is 186053844321.

123448350681 is a `hidden beast` number, since 1 + 23 + 4 + 48 + 3 + 506 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74824131600 + 48624219081 = 273540^2 + 220509^2 .

It is not a de Polignac number, because 123448350681 - 2² = 123448350677 is a prime.

It is a super-2 number, since 2×123448350681² (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 (123448351681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93947860 + ... + 93949173.

Almost surely, 2^123448350681 is an apocalyptic number.

It is an amenable number.

123448350681 is a deficient number, since it is larger than the sum of its proper divisors (57308596027).

123448350681 is a wasteful number, since it uses less digits than its factorization.

123448350681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187897112 (or 187897109 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 123448350681 in words is "one hundred twenty-three billion, four hundred forty-eight million, three hundred fifty thousand, six hundred eighty-one".