11009978453 has 2 divisors, whose sum is σ = 11009978454. Its totient is φ = 11009978452.

The previous prime is 11009978437. The next prime is 11009978459. The reversal of 11009978453 is 35487990011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7205802769 + 3804175684 = 84887^2 + 61678^2 .

It is a cyclic number.

It is not a de Polignac number, because 11009978453 - 2⁴ = 11009978437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11009978398 and 11009978407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11009978459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5504989226 + 5504989227.

It is an arithmetic number, because the mean of its divisors is an integer number (5504989227).

Almost surely, 2^11009978453 is an apocalyptic number.

It is an amenable number.

11009978453 is a deficient number, since it is larger than the sum of its proper divisors (1).

11009978453 is an equidigital number, since it uses as much as digits as its factorization.

11009978453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 11009978453 in words is "eleven billion, nine million, nine hundred seventy-eight thousand, four hundred fifty-three".