11378448421 has 8 divisors (see below), whose sum is σ = 11687306904. Its totient is φ = 11069660160.

The previous prime is 11378448407. The next prime is 11378448437. The reversal of 11378448421 is 12484487311.

It can be written as a sum of positive squares in 4 ways, for example, as 1361241025 + 10017207396 = 36895^2 + 100086^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11378448421 - 2¹⁹ = 11377924133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11378448451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634701 + ... + 652381.

It is an arithmetic number, because the mean of its divisors is an integer number (1460913363).

Almost surely, 2^11378448421 is an apocalyptic number.

It is an amenable number.

11378448421 is a deficient number, since it is larger than the sum of its proper divisors (308858483).

11378448421 is a wasteful number, since it uses less digits than its factorization.

11378448421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35111.

The product of its digits is 172032, while the sum is 43.

The spelling of 11378448421 in words is "eleven billion, three hundred seventy-eight million, four hundred forty-eight thousand, four hundred twenty-one".