11172105256450 has 24 divisors (see below), whose sum is σ = 20994343783812. Its totient is φ = 4422771563520.

The previous prime is 11172105256253. The next prime is 11172105256451. The reversal of 11172105256450 is 5465250127111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7213075804089 + 3959029452361 = 2685717^2 + 1989731^2 .

It is a super-3 number, since 3×11172105256450³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (11172105256451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1151758579 + ... + 1151768278.

Almost surely, 2^{11172105256450} is an apocalyptic number.

11172105256450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11172105256450 is a deficient number, since it is larger than the sum of its proper divisors (9822238527362).

11172105256450 is a wasteful number, since it uses less digits than its factorization.

11172105256450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303526966 (or 2303526961 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 11172105256450 in words is "eleven trillion, one hundred seventy-two billion, one hundred five million, two hundred fifty-six thousand, four hundred fifty".