11172834450 has 36 divisors (see below), whose sum is σ = 30017683098. Its totient is φ = 2979422400.

The previous prime is 11172834397. The next prime is 11172834493. The reversal of 11172834450 is 5443827111.

11172834450 is a `hidden beast` number, since 1 + 1 + 172 + 8 + 34 + 450 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7128256041 + 4044578409 = 84429^2 + 63597^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 12413811 + ... + 12414710.

Almost surely, 2^11172834450 is an apocalyptic number.

11172834450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11172834450 is an abundant number, since it is smaller than the sum of its proper divisors (18844848648).

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

11172834450 is a wasteful number, since it uses less digits than its factorization.

11172834450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24828539 (or 24828531 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 11172834450 in words is "eleven billion, one hundred seventy-two million, eight hundred thirty-four thousand, four hundred fifty".