13183128450 has 36 divisors (see below), whose sum is σ = 35418672978. Its totient is φ = 3515500800.

The previous prime is 13183128433. The next prime is 13183128451. The reversal of 13183128450 is 5482138131.

13183128450 is a `hidden beast` number, since 1 + 3 + 1 + 83 + 128 + 450 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 8433299889 + 4749828561 = 91833^2 + 68919^2 .

It is not an unprimeable number, because it can be changed into a prime (13183128451) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14647471 + ... + 14648370.

Almost surely, 2^13183128450 is an apocalyptic number.

13183128450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13183128450 is an abundant number, since it is smaller than the sum of its proper divisors (22235544528).

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

13183128450 is a wasteful number, since it uses less digits than its factorization.

13183128450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29295859 (or 29295851 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 13183128450 in words is "thirteen billion, one hundred eighty-three million, one hundred twenty-eight thousand, four hundred fifty".