11453516921 has 8 divisors (see below), whose sum is σ = 14279709504. Its totient is φ = 8924818320.

The previous prime is 11453516917. The next prime is 11453516923. The reversal of 11453516921 is 12961535411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11453516921 - 2² = 11453516917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11453516923) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 74373410 + ... + 74373563.

It is an arithmetic number, because the mean of its divisors is an integer number (1784963688).

Almost surely, 2^11453516921 is an apocalyptic number.

11453516921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11453516921 is a deficient number, since it is larger than the sum of its proper divisors (2826192583).

11453516921 is a wasteful number, since it uses less digits than its factorization.

11453516921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148746991.

The product of its digits is 32400, while the sum is 38.

The spelling of 11453516921 in words is "eleven billion, four hundred fifty-three million, five hundred sixteen thousand, nine hundred twenty-one".