123561946600 has 48 divisors (see below), whose sum is σ = 304180447500. Its totient is φ = 46517437440.

The previous prime is 123561946577. The next prime is 123561946609. The reversal of 123561946600 is 6649165321.

It can be written as a sum of positive squares in 6 ways, for example, as 61098941124 + 62463005476 = 247182^2 + 249926^2 .

It is not an unprimeable number, because it can be changed into a prime (123561946609) 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, 18167475 + ... + 18174274.

Almost surely, 2^123561946600 is an apocalyptic number.

123561946600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123561946600 is an abundant number, since it is smaller than the sum of its proper divisors (180618500900).

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

123561946600 is a wasteful number, since it uses less digits than its factorization.

123561946600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36341782 (or 36341773 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 123561946600 in words is "one hundred twenty-three billion, five hundred sixty-one million, nine hundred forty-six thousand, six hundred".