11337553921 has 12 divisors (see below), whose sum is σ = 11889962308. Its totient is φ = 10809811584.

The previous prime is 11337553919. The next prime is 11337553937. The reversal of 11337553921 is 12935573311.

It can be written as a sum of positive squares in 2 ways, for example, as 472410225 + 10865143696 = 21735^2 + 104236^2 .

It is not a de Polignac number, because 11337553921 - 2¹ = 11337553919 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11337553621) 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 11 ways as a sum of consecutive naturals, for example, 131341 + ... + 199813.

Almost surely, 2^11337553921 is an apocalyptic number.

It is an amenable number.

11337553921 is a deficient number, since it is larger than the sum of its proper divisors (552408387).

11337553921 is an equidigital number, since it uses as much as digits as its factorization.

11337553921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68832 (or 68809 counting only the distinct ones).

The product of its digits is 85050, while the sum is 40.

The spelling of 11337553921 in words is "eleven billion, three hundred thirty-seven million, five hundred fifty-three thousand, nine hundred twenty-one".