123568461140 has 24 divisors (see below), whose sum is σ = 259504604520. Its totient is φ = 49425320448.

The previous prime is 123568461127. The next prime is 123568461167. The reversal of 123568461140 is 41164865321.

It can be written as a sum of positive squares in 4 ways, for example, as 22904400964 + 100664060176 = 151342^2 + 317276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418616 + ... + 649904.

It is an arithmetic number, because the mean of its divisors is an integer number (10812691855).

Almost surely, 2^123568461140 is an apocalyptic number.

123568461140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123568461140 is an abundant number, since it is smaller than the sum of its proper divisors (135936143380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123568461140 is a wasteful number, since it uses less digits than its factorization.

123568461140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258011 (or 258009 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 123568461140 in words is "one hundred twenty-three billion, five hundred sixty-eight million, four hundred sixty-one thousand, one hundred forty".