123361522272 has 36 divisors (see below), whose sum is σ = 350809329780. Its totient is φ = 41120507328.

The previous prime is 123361522213. The next prime is 123361522279. The reversal of 123361522272 is 272225163321.

123361522272 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 61 + 522 + 2 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123361522279) 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 5 ways as a sum of consecutive naturals, for example, 214169022 + ... + 214169597.

It is an arithmetic number, because the mean of its divisors is an integer number (9744703605).

Almost surely, 2^123361522272 is an apocalyptic number.

123361522272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123361522272 is an abundant number, since it is smaller than the sum of its proper divisors (227447807508).

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

123361522272 is a wasteful number, since it uses less digits than its factorization.

123361522272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428338635 (or 428338624 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

Adding to 123361522272 its reverse (272225163321), we get a palindrome (395586685593).

The spelling of 123361522272 in words is "one hundred twenty-three billion, three hundred sixty-one million, five hundred twenty-two thousand, two hundred seventy-two".