15143220450 has 54 divisors (see below), whose sum is σ = 40691800227. Its totient is φ = 4037496000.

The previous prime is 15143220409. The next prime is 15143220451. The reversal of 15143220450 is 5402234151.

15143220450 is a `hidden beast` number, since 151 + 43 + 2 + 20 + 450 = 666.

15143220450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 14040117081 + 1103103369 = 118491^2 + 33213^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=87015.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15143220451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2607550 + ... + 2613350.

Almost surely, 2^15143220450 is an apocalyptic number.

15143220450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15143220450 is an abundant number, since it is smaller than the sum of its proper divisors (25548579777).

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

15143220450 is an frugal number, since it uses more digits than its factorization.

15143220450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11620 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 15143220450 in words is "fifteen billion, one hundred forty-three million, two hundred twenty thousand, four hundred fifty".