123361551372 has 24 divisors (see below), whose sum is σ = 287966642992. Its totient is φ = 41102942400.

The previous prime is 123361551361. The next prime is 123361551377. The reversal of 123361551372 is 273155163321.

It is a self number, because there is not a number n which added to its sum of digits gives 123361551372.

It is not an unprimeable number, because it can be changed into a prime (123361551377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167579 + ... + 2223762.

Almost surely, 2^123361551372 is an apocalyptic number.

123361551372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123361551372 is an abundant number, since it is smaller than the sum of its proper divisors (164605091620).

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

123361551372 is a wasteful number, since it uses less digits than its factorization.

123361551372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393689 (or 4393687 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The spelling of 123361551372 in words is "one hundred twenty-three billion, three hundred sixty-one million, five hundred fifty-one thousand, three hundred seventy-two".