13122018450 has 72 divisors (see below), whose sum is σ = 37110013200. Its totient is φ = 3315034080.

The previous prime is 13122018391. The next prime is 13122018457. The reversal of 13122018450 is 5481022131.

13122018450 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 201 + 8 + 450 = 666.

It is not an unprimeable number, because it can be changed into a prime (13122018457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 758820 + ... + 775919.

It is an arithmetic number, because the mean of its divisors is an integer number (515416850).

Almost surely, 2^13122018450 is an apocalyptic number.

13122018450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13122018450 is an abundant number, since it is smaller than the sum of its proper divisors (23987994750).

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

13122018450 is a wasteful number, since it uses less digits than its factorization.

13122018450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534776 (or 1534768 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 13122018450 in words is "thirteen billion, one hundred twenty-two million, eighteen thousand, four hundred fifty".